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

Question :1

$15^3 × 9^3 – 1555^2$ = ?

Answer: (a)

? = $15^3 × 9^3 – (1555)^2$

= 3375 × 729 – 2418025 = 42350

Question :2

11059 + 8889 – 908 = ? × 85

Answer: (e)

? × 85 = 11059 + 8889 – 908

⇒ ? × 85 = 19040

⇒?= ${19040}/{85}$=224

Question :3

If x + y = 23 and xy = 126; then $(x)^2 + (y)^2$ = ?

Answer: (e)

x + y = 23 and xy = 126

Now $x^2 + y^2 = (x + y)^2 – 2xy$

$(23)^2$ – 2 × 126

529 – 252

⇒ $x^2 + y^2$ = 277

Question :4

0.4 × ? = 0.000016

Answer: (a)

?=${0.000016}/{0.04}$ = 0.0004

Question :5

If 'x' is any natural number, then $x^3-1/x^3$ will always be greater than or equal to

Answer: (b)

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