What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?

Related Mcqs:

H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?

A. 180 B. 360 C. 540 D. 1260...

If the sum of two numbers is 55 and the H.C.F and L.C.M of these numbers are 5 and 120 respectively, then the sum of the reciprocal of the numbers is equal to___________?

A. 55/601 B. 601/55 C. 11/120 D. 120/11...

Find the H.C.F of 204, 1190 and 1445?

A. 34 B. 17 C. 85 D. 204...

Least perfect square number, exactly divisible by 21, 36 and 56 is_________?

A. 3600 B. 504 C. 441 D. 7056...

The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?

A. 1 min B. 2 min C. 3 min D. None...