# Math tricks : Part 3/20 100 Most Important Math tricks Series

## Math tricks : Part 3/20 100 Most Important Math tricks Series

Math tricks : Part 3/20 100 Most Important Math tricks Series

Q11. If  , then    is equal to

(a) 1

(b)

(c)

(d) 2

Q12. If  and x is real, then the value of    is

(a) 1

(b) 0

(c) 2

(d) -2

Q13. From a point in the interior of an equilateral triangle the perpendicular distances of the sides are  , and The perimeter (in cm) of the triangle is

(a) 64

(b) 32

(c) 48

(d) 24

Q14.  When a number is divided by 24, the remainder is 16. The remainder when the same number is divided by 12 is:

(a) 3

(b) 4

(c) 6

(d) 8

Q15. A takes 10 days less than the time taken by B to finish a piece of work. If both A and B can do it in 12 days, then the time taken by B alone to finish the work is

(a) 30 days

(b) 27 days

(c) 20 days

(d) 25 days

11(b) , 12 (c ), 13 (c) , 14 (b) , 15 (a)

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