simplification Model Questions & Answers, Practice Test for ibps po prelims 2023

Question :11

${1/4} × {6624} ×{1/6}$ × 12 = ?

Answer: (c)

?=${1/4}×6624×{1/6}×12$ = 3312

Question :12

6.4 × ? = 361.6

Answer: (d)

$361.6/6.4$ = 56.5

Question :13

$√{100000}$ ? =

Answer: (e)

? = $√{100000}$

$√{100 × 100 × 10} = 100√{10}$ = 100 × 3.162

316.2 ≈ 316.

Question :14

If x + y =18 and xy = 72, what is the value of $(x)^2 + (y)^2$ ?

Answer: (a)

x + y = 18

⇒ $(x + y)^2 = 18^2$ = 324

⇒ $x^2 + y^2$ + 2xy = 324

⇒ $x^2 + y^2$ = 324 – 2xy

⇒ $x^2 + y^2$ = 324 – 2(72)

⇒ $x^2 + y^2$ = 324 – 144 = 180

Question :15

$√{?}$ –17 = 22

Answer: (e)

$ √{?}$ = 17 + 22 = 39

⇒? = 39 × 39

= 1521

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