Answer (Detailed Solution Below)

Option 2 : 2
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General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

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ഇത്തരത്തിലുള്ള ചോദ്യങ്ങൾ‌ പരിഹരിക്കുന്നതിന്, ചുവടെ നൽകിയിരിക്കുന്ന “കരണികളുടെയും  കൃത്യങ്കങ്ങളുടെയും” നിയമങ്ങൾ‌ പാലിക്കുക:

കൃത്യങ്ക നിയമങ്ങൾ:

1. am × an = a{m + n}

2. am ÷ an = a{m - n}

3. (am)n = amn

4. (a)-m = 1/am

5. (a)m/n = n√am

6. (a)0 = 1

⇒ 2 × ? - 3 = 1

⇒ ? = (1 + 3)/2

∴ ? = 2

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