Question

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

?2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.99 2 + 21.99) = 21.99 × 23.01

A 21 Correct Answer Incorrect Answer
B 65 Correct Answer Incorrect Answer
C 45 Correct Answer Incorrect Answer
D 95 Correct Answer Incorrect Answer
E none of these Correct Answer Incorrect Answer

Solution

ATQ, ?2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.992 + 21.99) = 21.99 × 23.01 ?2 + (40 × 11 + 7) - (40 × 32 + 22) = 22 × 23 ?2 + (440 + 7) - (360 + 22) = 22 × 23 ?2 + 447 - 382 ~ 22 × 23 ?2 + 65 ~ 506 ?2 ~ 441 ? ~ 21

Practice Next

Relevant for Exams:

×
×