[B].
[C].
[D].
Answer: Option D
Explanation:
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
[B].
[C].
[D].
Answer: Option C
Explanation:
Let the initial investments of A and B be 3x and 5x.
A : B : C = (3x x 12) : (5x x 12) : (5x x 6) = 36 : 60 : 30 = 6 : 10 : 5.
[B].
[C].
[D].
Answer: Option C
Explanation:
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.
[B].
| 5 | 2 | min. past 7 |
| 11 |
[C].
| 5 | 3 | min. past 7 |
| 11 |
[D].
| 5 | 5 | min. past 7 |
| 11 |
Answer: Option D
Explanation:
When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o’clock, they are 25 min. spaces apart.
Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.
| 5 min. spaces are gained in | 60 | x 5 | min | = 5 | 5 | min. | |
| 55 | 11 |
| Required time = 5 | 5 | min. past 7. |
| 11 |
A. Rs.500
B. Rs.250
C. Rs.5012.50
D. Rs.5062.50
E. None of these.
Explanation:
Let the principal be Rs.P
S.I at 5% p.a in 8 years on Rs.P = Rs.500
(P)(8)(5)/100 = 500
P = 1250
C.I on Rs.2P i.e., Rs.2500 at 5% p.a in two years
=2500{ [1 + 5/100]2 – 1} = 2500{ 212 – 202 /202}
= 2500/400(441 – 400)
= 25/4(41) = 1025/4 = Rs.256.25
[B].
[C].
[D].
Answer: Option A
Explanation:
Let the number be x.
| Then, x + 17 = | 60 |
| x |
x2 + 17x – 60 = 0
(x + 20)(x – 3) = 0
x = 3.
[B].
[C].
[D].
Answer: Option D
Explanation:
20 x x = (64 + 36)(64 – 36) = 100 x 28
| x = | 100 x 28 | = 140 |
| 20 |