40 \times 64 \div 80 = ?^2 + 7

NIACL Model Paper 6 with solutions for free online practice

Question : 33 of 100

Marks: +1, -0

40 × 64 ÷ 80 = ?^2 + 7

Solution:

(1)

{40×64}/80=?^2 + 7

⇒

32 = ?^2 + 7

?^2 = 32 - 7 = 25

?= √25 = 5

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