1.

(69.987 × 2 - 27.872 × ? = 0)1). 32). 53). 74). 8

Answer»

Approximating the TERMS as,

⇒ 69.987 ≅ 70

⇒ 27.872 ≅ 28

Hence, the expression approximately becomes,

⇒ 70 × 2 – 28 × ? = 0

140 = 28 × ?

∴ ? = 5


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