১২৩১৪
How many terms of Arithmetic Progression (A. P.) 21, 18, 15, 12,.... must be taken to give the sum zero?
উত্তর
15
১২৩১৬
After being dropped a certain ball always bounces back to 2/5 of the height of its previous bounce. After the first bounce it reaches a height of 125 inches. How high (in inches) will it reach after its fourth bounce?
উত্তর
8
১২৩১৮
If m and p are positive integers and (m + p) m is even, which of the following must be true?
উত্তর
If m is odd, then p is odd
১২৩১৯
A pole 6m high casts a shadow 2√3m long on the ground, then the Sun's elevation is-
উত্তর
60°
১২৩২০
All possible three digit numbers are formed by 1, 2, 3. If one number is chosen randomly, the probability that it would be divisible by 111 is -
উত্তর
0