121.
Let x = 224 and y = 322. If the highest common factor of 23x and a × y is divisible by x and y, then what can be the possible value of a?

122.
The number 334 × 545 × 7p is divisible by 3340 then what is the minimum value of P?

124.
Let, p, q, r and s be positive natural numbers having three exact factors including 1 and the number itself. If q > p and both are two-digit numbers, and r > s and both are one-digit numbers, then the value of the expression $$\frac{{p - q - 1}}{{r - s}}$$  is:

126.
The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is?

127.
A six-digit number is divisible by 198. If the digits are rearranged, even then the number will be divisible by:

128.
If A = $$\frac{{\sqrt {0.0004} \times \root 3 \of {0.000008} }}{{\root 4 \of {16000} \times \root 3 \of {125000} \times \root 4 \of {810} }}$$      and B = $$\frac{{\root 3 \of {0.729} \times \root 4 \of {0.0016} }}{{\sqrt {0.16} }},$$    what is A × B?

129.
A boy added all natural numbers from 1 to 10, however he added one number twice due to which the sum becomes 58. What is the number which he added twice?

Read More Section(Number System)

Each Section contains maximum 100 MCQs question on Number System. To get more questions visit other sections.