A player holds 13 cards of four suits, of which seven are black and six are red. There are twice as many diamonds as spades and twice as many hearts as diamonds. How many clubs does he hold ?

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Question: A player holds 13 cards of four suits, of which seven are black and six are red. There are twice as many diamonds as spades and twice as many hearts as diamonds. How many clubs does he hold ?
[A].

4

[B].

5

[C].

6

[D].

7

Answer: Option C

Explanation:

Clearly, the black cards are either clubs or spades while the red cards are either diamonds or hearts.

Let the number of spades be x. Then, number of clubs = (7 – x).

Number of diamonds = 2 x number of spades = 2x;

Number of hearts = 2 x number of diamonds = 4x.

Total number of cards = x + 2x + 4x + 7 – x = 6x + 7.

Therefore 6x + 7 = 13 6x = 6 x – 1.

Hence, number of clubs = (7 – x) = 6.

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

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Question: A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its
[A].

aqueous tension.

[B].

saturated humidity.

[C].

vapor pressure.

[D].

absolute humidity.

Answer: Option A

Explanation:

No answer description available for this question.

After distributing the sweets equally among 25 children, 8 sweets remain. Had the number of children been 28, 22 sweets would have been left after equal distribution. What was the total number of sweets ?

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Question: After distributing the sweets equally among 25 children, 8 sweets remain. Had the number of children been 28, 22 sweets would have been left after equal distribution. What was the total number of sweets ?
[A].

328

[B].

348

[C].

358

[D].

Data inadequate

Answer: Option C

Explanation:

Let the total number of sweets be (25x + 8).

Then, (25x + 8) – 22 is divisible by 28

(25x – 14) is divisible by 28 28x – (3x + 14) is divisible by 28

(3x + 14) is divisible by 28 x = 14.

Therefore Total number of sweets = (25 x 14 + 8) = 358.