NAT I General Science Quantitative

t is an integer greater than 5. The expression that must represent an odd integer is 

• t(t+1) A
• 3t-1 B
• t² C
• 2t-3 D

Find the arithmetic mean of 25.2, 13.5, 18.5 and 34.8

• 13 A
• 23 B
• 27 C
• 5 D

In a school there are 400 students, of whom 70% are boys: what is the number of girls ?

• 120 A
• 200 B
• 280 C
• 2800 D

The average of x,y,z and 40 is 10. What is the average of x,y, adn z.

• 10 A
• 0 B
• 2 C
• 15 D

If (36)(?)(7)=21, then ? equals

• 21/43 A
• 1/42 B
• 1/12 C
• 1/11 D

A man opens a bookstall with a capital of Rs.25000. In three months his capital amounts to rupees 27500. What is the increase percent?

• 1% A
• 10% B
• 20% C
• 7% D

Dave is twice as old as Bob, who is 3 years older than steve. If Steve is 4a years old, Dave's age is:

• 8a A
• 22a B
• 14a C
• 8a+6 D

A and B can do a job in 6 day. If A do the job alone he takes 10 days. What will be the time required by B to complete the job alone ?

• 8 A
• 6 B
• 15 C
• 3 D

(60)²=? x 72

• 36 A
• 3600 B
• 40 C
• 50 D

A man bought 27 packets of Chilli Milli at$280 wach, 9 packets of Chilli Milli at$320 each and 6 packets of Chilli Milli at$360 each. Find the average price per packet of Chilli Milli.

• $250 A
• $300 B
• $400 C
• $380 D

If a machine can place a cap on a bottle of soda every 0.8 seconds, how many bottles can be capped in 2 hours ?

• 8000 A
• 9000 B
• 300 C
• 900 D

A piece of fabric is cut into three sections so that the first is three times as long as the second and the second is three times as long as the third. What part of the entire piece is the smallest section ?

• 2/5 A
• 3/7 B
• 2/3 C
• 1/13 D

What is the sum of money, of which 6% is 18 dollars ?

• 600 A
• 200 B
• 300 C
• 10 D

If 10 tractors are needed to plow a field in 4 hours, how many tractors are needed to plow the field in 5 hours?

• 32 A
• 4 B
• 16 C
• 8 D

Out of the 44 boys in a class 9 are of the age of 10, 15 at the age of 9, and the rest are at the age of 8. Find their average age.

• 7.85 A
• 8.75 B
• 12.2 C
• 14.35 D

5/3 + 7/6 +9/3 +7/2 =?

• 28/3 A
• 112/3 B
• 28/12 C
• 14/7 D

• b-180 A
• b-90 B
• 180-a/2 C
• 180-a D

A clock gain 8 minutes every x hours. How many hours will the clock gain in 3 days ?

• 576/x A
• 48/5x B
• 24/x C
• 576/5x D

√256÷√64=?

• 1/4 A
• 26/8 B
• 16 C
• 4 D

A word processing operator typed 44 words per minute. After practice, the operator's speed increased to 55 words per minutes. By what percent did the operator's speed increase?

• 25% A
• 50% B
• 15% C
• 20% D