Exams


Q:

A fair six-sided die is rolled twice. What is the probability of getting 4 on the first roll and not getting 6 on the second roll ?

A) 1/36 B) 5/36
C) 1/12 D) 1/9
 
Answer & Explanation Answer: B) 5/36

Explanation:

The two events mentioned are independent.

The first roll of the die is independent of the second roll. Therefore the probabilities can be directly multiplied.

P(getting first 4) = 1/6

P(no second 6) = 5/6

Therefore P(getting first 4 and no second 6) = 1/6 x 5/6 = 5/36

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Filed Under: Probability
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6 16450
Q:

A group consists of 4 men, 6 women and 5 children. In how many ways can 2 men , 3 women and 1 child selected from the given group ?

A) 600 B) 610
C) 609 D) 599
 
Answer & Explanation Answer: A) 600

Explanation:

Two men, three women and one child can be selected in ⁴C₂ x ⁶C₃ x ⁵C₁ ways = 600 ways.

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Filed Under: Permutations and Combinations
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6 16436
Q:

Refer the below data table and answer the following question.

If 400 calories are burned by jogging5 km, how many calories were burnt in the given week?

A) 1690 calories B) 1590 calories
C) 1540 calories D) 1640 calories
 
Answer & Explanation Answer: D) 1640 calories

Explanation:
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Filed Under: Table Charts
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0 16432
Q:

Refer the below data table and answer the following question.

If the company hasissued 6 lakh shares between its five partners and if Chinmay offers to sell 15,000 of his shares to Dhiraj, then Dhiraj will have how many shares?

A) 120000 shares B) 135000 shares
C) 150000 shares D) 105000 shares
 
Answer & Explanation Answer: B) 135000 shares

Explanation:
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Filed Under: Table Charts
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0 16431
Q:

The table below depicts the no. of pages printed by 6 Printers in 5 different months.

 

 

Study the table carefully and answer the following questions

 

What is the ratio between the number of pages printed by printer Q in second month and the number of pages printed by printer U in the fifth month?

A) 11:13 B) 7:11
C) 9:11 D) 9:13
 
Answer & Explanation Answer: B) 7:11

Explanation:
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Filed Under: Table Charts
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0 16431
Q:

Refer the below data table and answer the following question.

What was the total profit or loss of the company in last 5 years?

A) Loss of Rs 50 crores B) Profit of Rs 40 crores
C) Profit of Rs 50 crores D) Loss of Rs 40 crores
 
Answer & Explanation Answer: D) Loss of Rs 40 crores

Explanation:
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Filed Under: Table Charts
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0 16428
Q:

What approximate value will come in place of question mark (?) in the following question ?

 (49.001)2  = ?

A) 2500 B) 2400
C) 2600 D) 2300
 
Answer & Explanation Answer: B) 2400

Explanation:

Given (49.001)2  = ?

=> =~ 49 x 49

=~ 2401

=~ 2400 

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Filed Under: Mathematical Operations
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32 16427
Q:

What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad ?

A) 844 B) 814
C) 840 D) 820
 
Answer & Explanation Answer: B) 814

Explanation:

Length of largest tile = H.C.F. of 1517 cm and 902 cm = 41 cm.
Area of each tile = (41 x 41) sq.cm

Required number of tiles =1517 x 902/(41 x 41) = 814.

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Filed Under: Area
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8 16421