General mental ability and basic numeracy concepts - One Line Questions
1.
If the sum of two numbers is S and their difference is D, what are the numbers? —
(S+D)/2 and (S-D)/2
2.
What is the difference between the sum of the first 5 even numbers and the sum of the first 5 odd numbers? —
5
3.
What is the value of 0.5 * 0.05? —
0.025
4.
If a number is increased by 20% and then decreased by 20%, what is the net percentage change? —
4% decrease
5.
What is the ratio of 500 grams to 2 kilograms? —
1:4
6.
What is the probability of drawing a red card from a standard deck of 52 playing cards? —
1/2
7.
What is the value of (3/4) / (1/2)? —
3/2
8.
If the length of a rectangle is increased by 10% and the width is decreased by 10%, what is the net change in area? —
1% decrease
9.
What is the square root of 144? —
12
10.
If a train 150 meters long crosses a platform 250 meters long in 20 seconds, what is the speed of the train? —
20 m/s
11.
If a sum of money doubles in 5 years at simple interest, in how many years will it become 5 times the original sum? —
20 years
12.
A shopkeeper buys an item for Rs. 400 and sells it for Rs. 500. What is his profit percentage? —
25%
13.
If the cost price of an article is Rs. 200 and the selling price is Rs. 160, what is the loss percentage? —
20%
14.
What is the next number in the series: 1, 1, 2, 3, 5, 8, ...? —
13
15.
What is the least common multiple (LCM) of 6 and 8? —
24
16.
If a person walks 5 km north and then 12 km east, what is the shortest distance from the starting point? —
13 km
17.
If a sum of money is invested at compound interest, it doubles in 7 years. In how many years will it become 8 times itself? —
21 years
18.
Find the average of the numbers 10, 20, and 30. —
20
19.
If the sum of the first n natural numbers is 210, what is the value of n? —
20
20.
If a rectangle has a length of 10 cm and a width of 5 cm, what is its area? —
50 sq cm
21.
If the speed of a car is 50 km/hr, and it travels for 3.5 hours, what is the distance covered? —
175 km
22.
What is the value of (5 + 3) * 2? —
16
23.
What is the volume of a cube with side length 4 cm? —
64 cubic cm
24.
If 3 men can do a job in 10 days, how many days will it take for 5 men to do the same job (assuming they work at the same rate)? —
6 days
25.
If A's income is 20% more than B's income, by what percentage is B's income less than A's income? —
16.67%
26.
What is the greatest common divisor (GCD) of 12 and 18? —
6
27.
If a train travels at 60 km/hr, how long will it take to cover a distance of 180 km? —
3 hours
28.
If a man can row at 10 km/hr in still water, and the river flows at 2 km/hr, what is the time taken by him to travel 24 km downstream? —
3 hours
29.
What is the value of (2^3) * (2^2)? —
2^5
30.
What is the percentage increase if a price increases from Rs. 80 to Rs. 100? —
25%
31.
If it takes 4 hours for 3 machines to produce 12 units, how many units can 6 machines produce in 8 hours? —
96
32.
In a class of 60 students, 40% are girls. How many boys are there? —
36
33.
What is 25% of 200? —
50
34.
If the average of 5 numbers is 15, and one number is removed, the average becomes 12. What is the removed number? —
27
35.
What is the next term in the arithmetic progression: 5, 11, 17, 23, ...? —
29
36.
What is the median of the dataset: 3, 7, 2, 8, 5? —
5
37.
What is the mode of the following dataset: 5, 3, 5, 7, 5, 3, 8? —
5
38.
If the circumference of a circle is 44 cm, what is its radius? (Use pi = 22/7) —
7 cm
39.
If a number is divided by 7 and the quotient is 5 with a remainder of 3, what is the number? —
38
40.
What is the value of x if x/3 = 12? —
36
41.
What is the sum of the first 10 natural numbers? —
55
42.
If a clock shows 3:30, what is the angle between the hour hand and the minute hand? —
75 degrees
43.
What is the value of x if 2x + 5 = 15? —
5
44.
What is the value of (100 - 50) / 5? —
10
45.
If a boat travels downstream at 15 km/hr and upstream at 5 km/hr, what is the speed of the boat in still water? —
10 km/hr
46.
If the perimeter of a square is 36 cm, what is the length of its side? —
9 cm
47.
If the area of a circle is 154 sq cm, what is its diameter? (Use pi = 22/7) —
14 cm
48.
Which number comes next in the sequence: 2, 4, 6, 8, ...? —
10
49.
Which of the following is a prime number? —
17
50.
What is the sum of the interior angles of a triangle? —
180 degrees