English
Hindi

Question

Download Solution PDF

The coefficient of xy in the expression, 3x2z + 7xyz − 2z2x is

This question was previously asked in
Bihar STET Paper I: Mathematics (Held In 2019 - Shift 1)
Download PDF Attempt in App
View all Bihar STET Papers >
  1. 3z
  2. −2
  3. 7yz
  4. 7z

Answer (Detailed Solution Below)

Option 4 : 7z
Free Tests
View all Free tests >
Free
Bihar STET Paper 1 Social Science Full Test 1
150 Qs. 150 Marks 150 Mins
Start Now

Detailed Solution

Download Solution PDF

Given:

Expression: 3x²z + 7xyz - 2z²x

Concept used:

The coefficient of a term in an expression is the number that is multiplied by the variables in that term.

Calculation:

The expression has three terms: 3x²z, 7xyz, and -2z²x.

The term with xy is 7xyz.

The coefficient of xy in the expression is the number multiplied by xy, which is 7z.

∴ The coefficient of xy in the expression 3x²z + 7xyz - 2z²x is 7z.

Download Solution PDF
Latest Bihar STET Updates

Last updated on Jul 3, 2025

-> The Bihar STET 2025 Notification will be released soon.

->  The written exam will consist of  Paper-I and Paper-II  of 150 marks each. 

-> The candidates should go through the Bihar STET selection process to have an idea of the selection procedure in detail.

-> For revision and practice for the exam, solve Bihar STET Previous Year Papers.

‹‹ Previous Ques
Next Ques ››
Exams Tests Super Practice

More Polynomials Questions

Q1.If α and β, α > β, are the zeroes of the polynomial p (x) = 2x2 - 5x + k such that \(\rm \alpha-\beta=-\frac{7}{2}\)then k is a zero of which of the following polynomials? 
Q2.When the polynomial r(x) = ax + b is added to the polynomial p(x) = 4x4 + 2x3 - 2x2 + x − 1, then the resulting polynomial is divisible by the polynomial q (x) = x2 + 2x - 3. What is the value of (a - b)?
Q3.Find the value of the polynomial 5x - 4x2 + 3 at x=-1
Q4.If 16x2 - 25y2 + 7 = 0, x and y being positive numbers, then which of the following may hold?
Q5.If x = 2 + 22/3 + 21/3, then the value of x3 - 6x2 + 6x is:
Q6.If x = 4.965, y = 2.343 and z = 2.622 then, the value of (x3 - y3 - z3 - 3xyz) is equal to:
Q7.If (x - 2) is a factor of the polynomial p(x) = x3 + kx2 - 2x - 24, then k = ?
Q8.If a and b are the zeroes of the quadratic polynomial p(x) = ax2 + bx + c, then which of the following is correct?
Q9.What must be added to (x3 - 3x2 + 4x - 75) to obtain a polynomial that is exactly divisible by (x - 5)?
Q10.If x = 11, then the value of (x5 - 12x4 + 12x3 - 12x2 + 12x - 1) is:

More Algebra Questions

Q1.In the equation \(3x^2−12x+b=0\) with equal roots, if the positions of b and 12 are interchanged, then the roots of the new equation are ____.
Q2.Write the expanded form of \((5a+4b+3c)^2.\)
Q3.A bag contains a total of 40 coins. Among them Rs. 5 and Rs. 10 coins and all together make the total amount Rs. 310. What is the difference between the denomination of all Rs. 10 coins and the denomination of all Rs. 5 coins?
Q4.If abc = 1, then \( \rm \frac{1}{1+a+b^{-1}}+\frac{1}{1+b+c^{-1}}+\frac{1}{1+c+a^{-1}}\)
Q5.If both the roots of the quadratic equation (2p + 1) x2 + (3p + 2)x + (p+1) = 0 and (6p + 1)x2 + 9px + 3p - 1 = 0 are common, then what is the value of p2 +3p-1?
Q6.Write the expanded form of (7a + 9b + 6c)2
Q7. A student got twice as many sums wrong as he got right. If he attempted 48 sums in all, how many sums did he solve correctly?
Q8. A man has Rs . 960 in denominations of one rupee coins , five rupee coins and ten rupee coins . The number of coins in each denomination is equal . What is the total number of coins
Q9.If \(\sqrt{(a)^b}=a^2+5b\), then possible value of a & b will be _____.
Q10.If a2 + b2 = 130 and ab = 63, then (a + b)2 is ____
Suggested Test Series
View All >
Bihar STET Paper 1 (माध्यमिक) Mock Test 2024
321 Total Tests with 3 Free Tests
Start Free Test
Bihar STET Paper 2 (उच्च माध्यमिक) Mock Test 2024
508 Total Tests with   3 Free Tests
Start Free Test

More Quantitative Aptitude Questions

Q1.Perimeter of a rectangular field is equal to the perimeter of a triangular field whose sides are in the ratio 3:2:4 respectively. lf area of rectangular field is 500 m2 and sides are in the ratio 5:4 respectively, then calculate the longer side of the triangular field.
Q2.A cistern has an inlet pipe and an outlet pipe. Inlet pipe can fill three-fourth of the cistern in 24 minutes while outlet pipe can empty the one-third filled cistern in 16 minutes. If both the pipes are opened together, then the cistern will be completely filled in-
Q3.In a family, three sons were born for every 3 years one after the other. If the ratio of present ages of father and the eldest son is 15:7 and the average of the present ages of the 3 sons is 18 years. What will be the ratio of the ages of the father and the youngest son after 5 years?
Q4.Train A of length 80m while moving crosses a pole in 16 seconds. lf it is known that the lengths of train B and train A is in the ratio of 3:1, then how long would it take train B to cross a platform which is half the length of train A if the speed of train B is same as that of train A?
Q5.Can A and Can B contain a mixture of soda and water in the ratio of 5 : 3 and 7 : 2 respectively If soda and water are taken out in the ratio of P : Q from can A and B respectively to form a new mixture in which the ratio of soda and water is 12 : 5 respectively, then find the value Of P:Q?
Q6.A boat can covers a certain distance in upstream and same distance in downstream in total of 7 hours 48 minutes, If upstream speed of the boat is 62.5%. of downstream speed of the boat and speed of the stream is 3 km/h, what is the total distance covered by the boat?
Q7.M and R went for shopping and bought two sarees each at different cost. Cost price of saree bought by R is Rs.250 more than the cost price of saree bought by M. Shopkeeper earned a profit of 20% on selling both the sarees together to R and M which he bought them at total Rs.6000. At what cost did M buy saree?
Q8.There are three numbers m, n, and p, such that sum of m and n is 144, sum of thrice of n and five times of p is 464, and sum of p and m is 160, then what is the value of p?
Q9.While calculating average marks of 60 students, the two digits of original marks of a student are written reversed and thereby average of marks is increased by 0.6 Find the difference between the two digits of marks of the student?  
Q10.Simple interest received on a certain sum at a rate of simple interest of 5% for 2 years is Rs.780. If the rate of interest remains same, what will be the total amount at the time of withdrawal at the end of 5 years.  
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti master 2025 teen patti palace teen patti real cash apk teen patti casino apk