[B].
[C].
[D].
Answer: Option C
Explanation:
| 4.036 | = | 403.6 | = 100.9 |
| 0.04 | 4 |
A. Rs.9630
B. Rs.9680
C. Rs.9610
D. Rs.9650
E. None of these
Explanation:
A= P{1 + R/100}n
=> 8000{1 + 10/100}22 = Rs.9680
[B].
[C].
[D].
Answer: Option D
Explanation:
(C.P. of 17 balls) – (S.P. of 17 balls) = (C.P. of 5 balls)
C.P. of 12 balls = S.P. of 17 balls = Rs.720.
| C.P. of 1 ball = Rs. | 720 | = Rs. 60. | ||
| 12 |
[B].
[C].
[D].
Answer: Option D
Explanation:
Required sum = (2 + 3 + 5 + 7 + 11) = 28.
Note: 1 is not a prime number.
Definition: A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.
[B].
[C].
[D].
Answer: Option C
Explanation:
3x – y = 27 = 33 x – y = 3 ….(i)
3x + y = 243 = 35 x + y = 5 ….(ii)
On solving (i) and (ii), we get x = 4.
[B].
[C].
[D].
Answer: Option B
Explanation:
| Let the ten’s and unit digit be x and | 8 | respectively. |
| x |
| Then, | 10x + | 8 | + 18 = 10 x | 8 | + x | ||
| x | x |
10×2 + 8 + 18x = 80 + x2
9×2 + 18x – 72 = 0
x2 + 2x – 8 = 0
(x + 4)(x – 2) = 0
x = 2.
A. 15%
B. 10%
C. 7 1/2 %
D. 8%