There is a number consisting of two digits, the digit in the units' place is twice that in the tens' place and if 2 be subtracted from the sum of the digits, the difference is equal to th of the number. The number is

• 26

• 25

• 24

• 24

The sum of three positive numbers is 18 and their product is 162. If the sum of two numbers is equal to the third number, then the sum of squares of the numbers is

• 120

• 126

• 132

• 132

The greater of the two numbers whose product is 900 and the sum exceeds their difference by 30 is

• 60

• 75

• 90

• 90

Sum of three consecutive integers is 51. The middle one is

• 14

• 15

• 16

• 17

The reciprocals of the squares of the numbers  are in the ratio:

• 64 : 81

• 8 : 9

• 81 : 64

• 9 : 8

Sum of two numbers is thrice their difference. Their ratio is 

• 1 : 2

• 2 : 1

• 3 : 1

• 1 : 3

If  of a number exceeds its  by 8, then the number is:

• 130

• 120

• 160

• 150

Among three numbers, second is twice the first and also thrice the third. If the average of the three numbers is 33, then the largest number is

• 36

• 54

• 62

• 72

If the sum of two numbers be multiplied by each number separately, the products so obtained are 247 and 114. The sum of the numbers is

• 19

• 20

• 21

• 23

20.

If 21 is added to a number, it becomes 7 less than thrice of the number, Then, the number is

• 14

• 16

• 18

• 19