Question

Q.3 Number surprises.
(1) Take a number = [ ]
doubl.it
- 1​

Answer 1

Answer:

Perfect questions for guys interested in maths..

2. The value of x + x(xx) when x = 2 is:

(a) 10, (b) 16, (c) 18, (d) 36, (e) 64

Solution:

x + x(xx)

Put the value of x = 2 in the above expression we get,

2 + 2(22)

= 2 + 2(2 × 2)

= 2 + 2(4)

= 2 + 8

= 10

Answer: (a)

Answer 2

One type of number trick involves adding, subtracting, multiplying, or dividing by a starting number and subtracting the original number in such a way that each participant always arrives at a certain number:

Think of a number between 1 and 100.

Multiply your number by 4.

Add 12.

Multiply this number by 2.

Add 16.

Divide this number by 8.

Subtract your original number.

Your new number is 5!

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