[B].
[C].
[D].
Answer: Option B
Explanation:
The smallest 5-digit number = 10000.
41) 10000 (243
82
—
180
164
—-
160
123
—
37
—
Required number = 10000 + (41 – 37)
= 10004.
[B].
[C].
[D].
Answer: Option B
Explanation:
3
+ 33
+ 333
+ 3.33
——
372.33
——
[B].
[C].
[D].
Answer: Option B
Explanation:
| P.W. = Rs. | 100 x 2310 | = Rs. 1680. | ||||
|
[B].
[C].
[D].
Answer: Option B
Explanation:
L.C.M. of 12, 18, 21 30 2 | 12 – 18 – 21 – 30
—————————-
= 2 x 3 x 2 x 3 x 7 x 5 = 1260. 3 | 6 – 9 – 21 – 15
—————————-
Required number = (1260 2) | 2 – 3 – 7 – 5
= 630.
A. Rs. 2160
B. Rs. 3120
C. Rs. 3972
D. Rs. 6240
Explanation:
Let P = Rs. 100. Then, S.I. Rs. 60 and T = 6 years.
R = (100 * 60)/(100 * 6) = 10% p.a.
Now, P = Rs. 12000, T = 3 years and R = 10% p.a.
C.I. = [12000 * {(1 + 10/100)3 – 1}]
= 12000 * 331/1000 = Rs. 3972
[B].
[C].
[D].
Answer: Option C
Explanation:
Let the cistern be filled by pipe A alone in x hours.
Then, pipe B will fill it in (x + 6) hours.
| 1 | + | 1 | = | 1 | |
| x | (x + 6) | 4 |
| x + 6 + x | = | 1 | |
| x(x + 6) | 4 |
x2 – 2x – 24 = 0
(x -6)(x + 4) = 0
x = 6. [neglecting the negative value of x]