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Q:

Nitin ranks 18th in a class of 49 students. What is rank from the last ?

A) 31	B) 18
C) 32	D) 19

Answer & Explanation Answer: C) 32

Explanation:

Number students behind the nitin in rank = (49 - 18) = 31

Nitin is 32nd from the last

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Filed Under: Number, Ranking and Time Sequence Test

Q:

If a + b + c = 13, $a^{2} + b^{2} + c^{2} = 69$ then find the ab + bc + ca :

A) 10	B) 30
C) 50	D) 70

Answer & Explanation Answer: C) 50

Explanation:

${(a + b + c)}^{2} = a^{2} + b^{2} + c^{2} + 2 (a b + b c + c a)$

$2 (a b + b c + c a) = {(a + b + c)}^{2} - (a^{2} + b^{2} + c^{2}) = 169 - 69 = 100 = (a b + b c + c a) = 50$

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Filed Under: Simplification

Q:

The total of 324 of 20 paise and 25 paise make a sum of Rs. 71. The no of 20 paise coins is :

A) 50	B) 100
C) 150	D) 200

Answer & Explanation Answer: D) 200

Explanation:

Let the number of 20 paise coins be x. Then the no of 25 paise coins = (324 - x).

0.20 * (x) + 0.25 (324 - x) = 71 => x = 200..

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Q:

Water boils at 212°F or 100°C and melts at 32°F or 0°C . If the temparature of the particular day is 35°C , it is equal to :

A) 85°F	B) 95°F
C) 96°F	D) 97°F

Answer & Explanation Answer: B) 95°F

Explanation:

Let F and C denotes the temparature in Fahrenheit anid Celcsius respectively.

Then, (F - 32) /(212 - 32) = (C - 0)/(100 - 0), if c = 35, then F = 95.

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Filed Under: Simplification

Q:

A class of boys stands in a single line, One boy is 19th in order from both the ends, How many boys are there in the class ?

A) 37	B) 39
C) 27	D) 38

Answer & Explanation Answer: A) 37

Explanation:

Number of boys in the class = (18 + 1 +18) = 37

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Filed Under: Number, Ranking and Time Sequence Test

Q:

When is the ' World environment Day ' celebrated

A) June 5	B) April 7
C) October 24	D) None of the above

Answer & Explanation Answer: A) June 5

Explanation:

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Filed Under: Important Days and Years

Q:

Sam ranked 9th from the top and 38th from the bottom in a class. How many students are there in the class ?

A) 45	B) 47
C) 46	D) 48

Answer & Explanation Answer: C) 46

Explanation:

Number of students in class = (8 + 1 + 37) = 46

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Filed Under: Number, Ranking and Time Sequence Test

Q:

When is the ' World AIDS Day ' observed all over the world

A) 1st october	B) 12th December
C) 1st December	D) 13th November

Answer & Explanation Answer: C) 1st December

Explanation:

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Filed Under: Important Days and Years

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