60-Second Math challenge| Fast calculation tricks for competitive exams
60-Second Math challenge| Fast calculation tricks for competitive exams
Fast calculation tricks in math and mental math concepts can help you solve complex questions in just a few seconds. By mastering these techniques, you can perform calculations quickly and accurately, which can be incredibly useful in various competitive and entrance examinations.
Que 1: Find the remainder when N=1121231234....78 is divided by 101?
(a) 31
(b) 44
(c) 69
(d) 100
Que 2: Find the remainder when 1×2×3×4×5×.....×30 is divided by 61?
a) 4
(b) 11
(c) 24
(d) 53
Que 3: 1+4+13+40+121+364+....+ 10th term=?
(a) 46531
(b) 39251
(c) 44281
(d) 40511
Que 4: 4444⁵⁵⁵⁵+4444⁵⁵⁵⁵+XXXX⁴⁴⁴⁴, when divided by 9, leaves the remainder of 5 then finds the sum of all possible values of x?
(a) 12
(b) 9
(c) 6
(d) None
Que 5: Find the sum of the digits of the product of the common divisors of 26280 and 27300.
(a) 27
(b) 63
(c) 18
(d) 51
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