Maths

There are 10 cards numbered from 1 to 10. A card is drawn randomly. The probability of getting
an even numbered card is

• 1/10

• 1 / 5

• 1 /2

• 2 /5

There are 100 cards numbered from 1 to 100 in a box. If a card is drawn from the box and
the probability of an event is 1 /2, then the number of favorable cases to the event is

• 20

• 25

• 40

• 50

If 5 is subtracted from three times a number, the result is 16. The number is

• 8

• 9

• 7

• 12

the number which when multiplied by 7 is increased by 78 is

• 10

• 15

• 14

• 13

A man says, "I am thinking of a number. When I divide it by 3 and then add 5, my answer is twice the number I thought of". The number is

• 3

• 2

• 5

• 7

The sum of an angle and one-third of its supplementary angle is 90°. The measure of the angle is

• 135°

• 120°

• 60°

• 45°

Two complemntary angles are in the ratio 2 : 3. The measure of the larger angle is

• 60°

• 54°

• 66°

• 48°

45 cows can graze a field in 12 days. How many cows will graze the same field in 9 days?

• 60 cows

• 52 cows

• 54 cows 

• 45 cows

8 men can finish a piece of work in 40 days. If 2 more men join them, then the work will be computed in

• 30 days

• 32 days

• 36 days

• 38 days

If the measures of the angles of a triangle are (2x)°, (3x − 5)° and (4x − 13)°. Then the value of x is

• 22

• 18

• 20

• 30