Explanation

50 - ( 10 + 25 ) = 15 

Khadija is middle of  15

= 8 + 10 

= 18th

Explanation

Explanation

200 percent *800 

= ( 200:100)*800

= ( 200*800):100

=160000:100

= 1600

Explanation

The possible number of subsets of a set with $n$ elements, including the empty set and the universal set, is $2^n$.

Explanation

3 people invest 9000, 12000 and 15000 respectively. After 6 months the profit of the 3rd person is 1500 then what will be the profit of the other

1st person profit = 900

2nd person profit = 1200

3rd person profit = 1500

concept: each get 10% of this invested money

900 and 1200 profit for other

 

Explanation

Explanation

Morning is to Breakfast as Night is to Dinner.

Reason –

In the morning we eat breakfast and in the night we eat dinner

Explanation

Here are odd numbers

101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129

one digit is missing in the first two series 101 and 105

then 

two digits are missing in the next two series 105 and 111

then

three digits are missing in the next two series 111 and 119

then 

obviously, next digit in the series comes after 4 digits ( 119, 121, 123, 125, 127, 129)

Explanation

Yellow, red, and blue are the primary colors

green is not

Explanation

The logic is: 4 × 1 = 4

4 × 2 = 8

8 × 3 = 24

24 × 4 = 96

96 × 5 = 480