SBI PO 2019 Questions and Answers Detailed Explanation
MOST IMPORTANT previous year question answers - 1 EXERCISES
Directions:
What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)
The following question based on SBI PO topic of previous year question answers
(a) 30
(b) 17
(c) 27
(d) 24
e) 3
The correct answers to the above question in:
Answer: (c)
6 % of [ ( 198.99 ) + ( 15.99 )2 ] = ?
? = $6/100$ × [ 199 + (16)2 ]
? = $6/100$ × [ 199 + 256 ]
? = $6/100$ × 455
? = 27.30
? ≈ 27
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Question : 1
$1/14.96$ - $1/3.94$ + $1/?$ = 0
a) 5
b) 8
c) 10
d) 12
e) 3
Answer »Answer: (a)
${1/14.96 - 1/3.94 + 1/? = 0}$
${1/? = 1/4 - 1/15}$
$1/?$ = $\text"15 - 4"/60$
$1/? = 11/60$
? = $60/11$ ≈ 5
Question : 2
(6.02)2 - $√{120.89} + √{144.06}$= ?
a) 35
b) 42
c) 37
d) 40
e) 33
Answer »Answer: (c)
(6.02)2 - $√{120.89} + √{144.06}$= ?
? = (6)2 - $√{121} + √{144}$
? = 36 - 11 + 12
? = 37
Directions:
What should come in place of the question mark '?' in the following number series?
Question : 3
15, 8, 9, 15, 32, ?
a) 82.5
b) 81.5
c) 84.5
d) 80.5
e) 86
Answer »Answer: (a)
15 × 0.5 + 0.5 = 8
8 × 1 + 1 = 9
9 × 1.5 + 1.5 = 15
15 × 2 + 2 = 32
32 × 2.5 + 2.5 = 82.5
Question : 4
13.96 × $√{9.09}$ + 200.02 = ?
a) 226
b) 242
c) 256
d) 351
e) 248
Answer »Answer: (b)
? = 14 × 3 + 200
⇒ ? = 42 + 200
⇒ ? = 242
Question : 5
8.02 – (? – 9.01) + (10.92)2 = 120
a) 0
b) 18
c) 21
d) 24
e) 23
Answer »Answer: (b)
8.02 – (? – 9.01) + (10.92)2 = 120
⇒ 8 – ? + 9 + (11)2 = 120
⇒ 8 – ? + 9 + 121 = 120
⇒ ? = 138 – 120
⇒ ? = 18
Directions:
In the following question, two equations are given in variables X and Y. You have to solve these equations and determine the relation between X and Y.
Question : 6
- x 2 – 16x + 64 = 0
- Y 2 = 64
a) If X > Y
b) If X < Y
c) If X ≥ Y
d) . If X ≤ Y
e) If X=Y or No relation can be established
Answer »Answer: (c)
x 2 – 16x + 64 = 0
⇒ (x – 8)2 =0
⇒ x = 8
Y 2 = 64
⇒ Y = ± 8
So, X ≥ Y
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