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

Question :16

$2/7 × 5/6 × 3/8 × ?$ = 790

Answer: (c)

? = $790 × {8/3} × {6/5} × {7/2}$ = 79 × 8 × 14 = 8848

Question :17

59475 ÷ $√{?}$ = 195 × 5

Answer: (e)

${59475}/√{?}$ = 195 × 5

⇒$√{?}$= $59475/{195×5}$ = 61

⇒61 × 61 = 3721

Question :18

The equation${12x+1}/4 = {13x-1}/5$ + 3 is true for

Answer: (d)

${12x+1}/4={13x-1}/5+3$

$60x+5=52x-4+15$

$8x+15-4-5$

8x=6x

$x=6/8=3/4$

$∴x=3/4$

Question :19

$(?)^2 – (12)^3$ = 976

Answer: (d)

Let the required number be = x

According to the question,

$x^2 – (12)^3$ = 976

or, $x^2 – 1728 = 976$

or, $x^ 2$ = 1728 + 976 =2704

or, x = ${√2704}$ = 52

Question :20

6.3 × 12.8 × 9.9 – 69.996 = ?

Answer: (a)

? = 6.3 × 12.8 × 9.9 – 69.996

= 798.336 – 69.996 = 728.34

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