The value of log2 16 is:
Question:
The value of log2 16 is:
[A].
4
8
16
The value of log2 16 is:
[A].
| 1 |
| 8 |
[B].
[C].
[D].
Answer: Option B
Explanation:
Let log2 16 = n.
Then, 2n = 16 = 24 n = 4.
log2 16 = 4.
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A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?
A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?A. 50km
B. 60km
C. 70km
D. 80 km
Explanation:
Let the distance between the two parts be x km.
Then speed downstream = x/4 km/hr.
Speed Upstream = x/5 km/hr
Speed of the stream = ½ (x/4 –x/5)
Therefore, ½(x/4 –x/5) = 2. => x/4 –x/5 = 4 => x = 80.
Hence, the distance between the two ports is 80km.A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?
Question: A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?
[A].45% [B].
45 5 % 11 [C].
54 6 % 11 [D].
55% Answer: Option B
Explanation:
Number of runs made by running = 110 – (3 x 4 + 8 x 6)
= 110 – (60)
= 50.
Required percentage = 50 x 100 % = 45 5 % 110 11 Video Explanation: https://youtu.be/X2zTnABqEHU
16, 33, 65, 131, 261, (….)
Question:
16, 33, 65, 131, 261, (….)
[A].523 [B].
521 [C].
613 [D].
721 Answer: Option A
Explanation:
Each number is twice the preceding one with 1 added or subtracted alternatively.
So, the next number is (2 x 261 + 1) = 523.
The difference between compound and simple interest on a certain sum of money for 3 years at 6 2/3% p.a is Rs.184. Find the sum?
The difference between compound and simple interest on a certain sum of money for 3 years at 6 2/3% p.a is Rs.184. Find the sum?A. Rs.12000
B. Rs.14200
C. Rs.17520
D. Rs.13500
Explanation:
P = (184*106) / [6 2/3 * 6 2/3 *(300*6 2/3)]
P = 13500A man saves Rs. 200 at the end of each year and lends the money at 5% compound interest. How much will it become at the end of 3 years?
A man saves Rs. 200 at the end of each year and lends the money at 5% compound interest. How much will it become at the end of 3 years?A. Rs. 565.25
B. Rs. 635
C. Rs. 662.02
D. Rs. 666.50
Explanation:
Amount = [200(1 + 5/100)3 + 200(1 + 5/100)2 + 200(1 + 5/100)]
= [200 * 21/20(21/20 * 21/20 + 21/20 + 1)] = Rs. 662.02If one-third of one-fourth of a number is 15, then three-tenth of that number is:
Question: If one-third of one-fourth of a number is 15, then three-tenth of that number is:
[A].35 [B].
36 [C].
45 [D].
54 Answer: Option D
Explanation:
Let the number be x.
Then, 1 of 1 of x = 15 x = 15 x 3 x 4 = 180. 3 4 So, required number = 3 x 180 = 54. 10 Video Explanation: https://youtu.be/z49OUnzTnwY