In an examination 52% of students failed in Hindi and 42% of students failed in English. If 17% of students failed in both subjects. then what per cent of students passed in both subjects?

Solution
Ven Diagram
So, passed in both subjects
= 100  77% = 23%
Find the number which when multiplied by 15 increases by

Solution
Let the number be x.
⇒ from question,
x × 15 = x+ 196
⇒ 14x= 196
⇒x= ^{196}⁄_{14} = 14
Match the lists I and II and select the correct answer from the codes given below:
ListI
(1) Unicellularmicro organism
(2) Flightless bird
(3) Inhabitant on land and inwater
(4) Cylindrical and undivided body
ListII
(A) Kiwi (B) Turtle
(C)Hookworm (D)Amoeba

Solution
1D,2A, 3B, 4C
A student walks 30 m to the south and turns left to walk 30m. He again turns left and moves 20m. .He again turns left to walk 3Om. How far is he from the starting point?

Solution
From Question,
Thus distance of start point to final point = AE = 30  20 = 10 m.
Find the missing letters:
l n – mllm – n l

Solution
Find the missing number:
4, 10, 22, 46, ? 190

Solution
The classical dance Bharatnatyam belongs to

Solution
Tamil Nadu
Which number will come next in the following sequence?
2, 6, 14, 30, 62,……..

Solution
The given number series is based on the following pattern :
2 × 2 + 2 = 6
6 × 2 + 2 = 14
14 × 2 + 2 = 30
30 × 2 + 2 = 62
∴ ? = 62 × 2 + 2
= 124 + 2 = 126
Find the oddman out:

Solution
Find the number of bricks each of dimensions 25 cm × 12.5cm × 7.5 cm to make a wall of dimensions 5m × 3m × 20m.

Solution
Number of bricks
\(=\frac{Volume\: of\: wall}{Volume\: of\: a \: brick}\)
\(=\frac{500 \times 300 \times 2000}{25\times 12.5\times 7.5}= 128000\)