Explanation

The pattern of the series is obtained by dividing the previous term by 2:

• 2 ÷ 2 = 1
• 1 ÷ 1 = 1
• 1 ÷ 2 = 1/2
• 1/2 ÷ 2 = 1/4
• 1/4 ÷ 2 = 1/8

So, the next number in the series is 1/8.

Explanation

The series is obtained by alternating between two sequences:

The square of an integer: 1² = 1, 2² = 4, 3² = 9, 4² = 16, 5² = 25

A number decreased by 2: 9 - 2 = 7, 36 - 2 = (not needed in this case)

So, the next term in the series would be:

5² = 25

The correct answer is: 25.

Explanation

3^1 = 3

3^2 = 9

3^3 = 27, so…

3^4 = 81

Explanation

Let's analyze the sequence:15, 14, 12, 9,?

The pattern seems to involve subtracting decreasing amounts:

15−1=14

14−2=12

12−3=9

Following this pattern, the next subtraction should be:

9−4=5

Thus, the missing term is 5.

Explanation

In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.

In this Series 21 is common random number.
Now add 2 with 9.
9 + 2 = 11
21 is next common number.
11 + 2 = 13
21 is next common number.
13 + 2 = 15.
21 is next common number.
So the answer is c = 21.

Explanation

88 + 43 = 131

13+3=16 by skipping next 1 odd digit that is 5 we will add 7 to 16 16+7=23 by skipping next 2 odd digit to seven we will add 13 to 23 23+13=36 by skipping next 3 odd digit to 13 (i.e 15,17,19) we will ad 21 to 36 36+21=57 by skipping next 4 odd digit to 21 (i.e 23,25,27,29) we will ad 31 to 57 57+31=88 by skipping next 5 odd digit to 31 (i.e 33,35,37,39,41) we will ad 43 to 88 88+43=131`

Explanation

34+5=39 39-2=37 37+5=42 42-2=40 40+5=45.

Explanation

Divide 1200 by 2 = 600

Divide 600 by 2 = 300

Divide 300 by 2 = 150

Explanation

Let the present age is = x

Lubna age = x + 15

Father age = x + 40

x + 40 = 6(x+15)

x + 40 = 6x + 90

5x = 50

x = 10 years

Explanation

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