1, 1, 2, 6, 24, 96, 720
Question:
1, 1, 2, 6, 24, 96, 720
[A].
720
96
24
6
1, 1, 2, 6, 24, 96, 720
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
Go on multiplying with 1, 2, 3, 4, 5, 6 to get next number.
So, 96 is wrong.
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A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6% p.a for 2 years. Find his gain in the transaction per year.
Question: A person borrows Rs. 5000 for 2 years at 4% p.a. simple interest. He immediately lends it to another person at 6% p.a for 2 years. Find his gain in the transaction per year.
[A].Rs. 112.50 [B].
Rs. 125 [C].
Rs. 225 [D].
Rs. 167.50 Answer: Option A
Explanation:
Gain in 2 years = Rs. 5000 x 25 x 2 – 5000 x 4 x 2 4 100 100 = Rs. (625 – 400) = Rs. 225. Gain in 1 year = Rs. 225 = Rs. 112.50 2 Video Explanation: https://youtu.be/zBjcwqIcmL4
A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?
A boat travels upstream from B to A and downstream from A to B in 3 hours. If the speed of the boat in still water is 9km/hr and the speed of the current is 3km/hr, the distance A and B is:_______?A. 4km
B. 6 km
C. 8 km
D. 12 km
Explanation:
Speed downstream = (9+3) km/hr = 12km/hr
Speed upstream = (9-3) km/hr = 6 km/hr
Distance AB = x km
x/6 + x/12 = 3
=> 2x + x = 36
=> x= 12A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:
Question:
A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:
[A].1 13 [B].
2 13 [C].
1 26 [D].
1 52 Answer: Option C
Explanation:
Here, n(S) = 52.
Let E = event of getting a queen of club or a king of heart.
Then, n(E) = 2.
P(E) = n(E) = 2 = 1 . n(S) 52 26 On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will be the remainder ?
Question:
On dividing a number by 357, we get 39 as remainder. On dividing the same number 17, what will be the remainder ?
[A].0 [B].
3 [C].
5 [D].
11 Answer: Option C
Explanation:
Let x be the number and y be the quotient. Then,
x = 357 x y + 39
= (17 x 21 x y) + (17 x 2) + 5
= 17 x (21y + 2) + 5)
Required remainder = 5.
The angle between the minute hand and the hour hand of a clock when the time is 8.30, is:
Question: The angle between the minute hand and the hour hand of a clock when the time is 8.30, is:
[A].80° [B].
75° [C].
60° [D].
105° Answer: Option B
Explanation:
Angle traced by hour hand in 17 hrs = 360 x 17 ° = 255°. 2 12 2 Angle traced by min. hand in 30 min. = 360 x 30 ° = 180°. 60 Required angle = (255 – 180)° = 75°.
0.002 x 0.5 = ?
Question:
0.002 x 0.5 = ?
[A].0.0001 [B].
0.001 [C].
0.01 [D].
0.1 Answer: Option B
Explanation:
2 x 5 = 10.
Sum of decimal places = 4
0.002 x 0.5 = 0.001