Mathophilia

The LCM of smallest two digit composite no. and smallest composite no. is

• 12

• 20

• 4

• 44

The smallest no. which when divided by 17, 23, 29 leaves a remainder 11 in each case.

• 493

• 11350

• 11339

• 667

The exponent of 2 in the prime factorisation of 144 .

• 4

• 5

• 6

• 3

The largest no. which divides 70 and 125 leaving remainders 5 and 8 respectively.

• 13

• 65

• 875

• 1750

The product of a non zero rational no. and an irrational no. is

• always irrational

• always rational

• rational or irrational

• one

• 2,3

• -2,3

• 2,-3

• -2,-3

• -5

• 5

• 3

• -3

The graph of the linear equation 2x + 5y = 10 meets the x axis at the point

• (0,2)

• (2,0)

• (5,0)

• (0,5)

• 39851

• 39951

• 39961

• 38951

• 108

• 207

• 669

• 729