Sbi Po Preliminary Exam Exam Template With Answers Page 19
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24SBI PO Preliminary Exam Model Paper - 3
×
×
.
26. Time = [
] years = 4 years
27. 20% of a = b
a = b
So, b% of 20 = [
× 20] = [
a ×
× 20] =
a = 4% of a
28. (4
+ 4
+ 4
+ 4 ) = 4
× (1 + 4 + 4 + 4 ) = 4
= 4
× 85
× (4 × 85) = (4
× 340), which is divisible by 10.
29. Average of 20 numbers = 0.
Sum of 20 numbers (0 x 20) = 0.
It is quite possible that 19 of these numbers may be positive and if their sum is athen 20th
number is (-a).
30. Required length
= HCF of 700 cm, 385 cm and 1295 cm
= 35 c
(
)
(
⎯ )
31.
=
⎯
= 64 ⎯ 49 = 15
=
(by componendo and dividend)
Therefore
32. Simran : Nanda
= [5000 x 36] : [80000 x 3]
= 3 : 4
Simran’s share
= Rs. [24500 ×
]
×
×
×
7
4
33. Number of ways of selecting (3 consonants out of 7) and (2 vowels out of 4) = (
C
x
C
)
×
×
×
3
2
=
×
= 210
Number of groups, each having 3 consonants and 2 vowels = 210
Each group contains 5 letters.
Number of ways of arranging
5 letters among themselves = 5 x 4 x 3 x 2 x 1 = 120
Required number of ways = 210 × 120 = 25200
34. In two throws of a die, n(S) = (6 × 6) = 36
Let E = event of getting a sum = {(3, 6), (4, 5), (5, 4), (6, 3)}
P(E) =
=
=
35. Clearly, my mother was born 3 years before I was born and 4 years after my sister was born.
= (26 ⎯ 3)
So, father’s age when
= (28 + 4)
Brother was born
= 32 years
Mother’s age when brother was born
= 23 years
36. Option B
Given number
5
2
6
3
1
8
7
After rearrangement
6
1
5
4
2
7
8
Arranged in ascending order 1, 2, 4, 5, 6, 7, 8
rd
So, the 3
digit from left end is 4.
37. Option D
38. Option D
D > A
(B, E) > C
Page 19
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