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What approximate value should come in place of the question mark (?) in the following question?(You are not expected to calculate the exact value) (10.097)2 + (3.98)3 × 5.05 = 20.95 × ?

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What approximate value should come in place of the question mark (?) in the following question?(You are not expected to calculate the exact value)

(10.097)2 + (3.98)3 × 5.05 = 20.95 × ?


1). 13
2). 20
3). 27
4). 42


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1 answers

2 vote
Answered by on | Votes 2 |

(10.097)2 + (3.98)3 × 5.05 = 20.95 × ?

Approximating the value to the nearest integer:

102 + 43 × 5 = 21 × (?) 

100 + 64 × 5 = 21 × (?) 

100 + 320 = 21 × (?) 

420 = 21 × (?) 

? = 420/21

? = 20

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