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Q:

Missing Letter Challenge

18739822_1315678848539216_348955014883925877_n1499155394.jpg image

A) N	B) K
C) L	D) P

Answer & Explanation Answer: A) N

Explanation:

The alphabetical value of the letters in the left hand column follows through the sequence of Prime Numbers, with the letters in the right hand column representing the corresponding reverse alphabetical values. So,

M = Reverse of M = N.

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Filed Under: Missing letters puzzles
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Q:

Number Challenge Puzzle ?

18620018_1306314879475613_5569162457360056464_n1499146603.jpg image

A) 1	B) 4
C) 5	D) 0

Answer & Explanation Answer: A) 1

Explanation:

In each row,

Sum of 1st two digit number + last two digit number = Middle two digit number

i.e., 1st row 15 + 40 = 55

2nd row 46 + 47 = 93

Similarly, 7x + 16 = 87 => x = 1.

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Filed Under: Number Puzzles
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Q:

Maths Challenge

18664144_1312106528896448_6995063813597220901_n1499145941.jpg image

A) 19	B) 38
C) 22	D) 40

Answer & Explanation Answer: D) 40

Explanation:

To get a pair of black rings 100 percent certain

27 blue + 17 red + 2 black = 40 rings should be taken out

Then only we can get 100 % a pair of black rings.

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Q:

80 litres of diesel is required to travel 800 km using a 800 cc engine. If the volume of diesel required to cover a distance varies directly as the capacity of the engine, then how many litres of diesel is required to travel 1000 kms using 1200 cc engine ?

A) 120 lit	B) 140 lit
C) 110 lit	D) 150 lit

Answer & Explanation Answer: D) 150 lit

Explanation:

To cover a distance of 800 kms using a 800 cc engine, the amount of diesel required = 80 litres.

=> the amount of diesel required to cover a distance of 1000 kms = 1000 x 80/800 = 100 litres

However, the vehicle uses a 1200 cc engine and it is given that the amount of diesel required varies directly as the engine capacity.

i.e., for instance, if the capacity of engine doubles, the diesel requirement will double too.

Therefore, with a 1200 cc engine, quantity of diesel required = 1200/800 x 100 = 150 litres.

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Filed Under: Ratios and Proportions
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Q:

A man sold two flats for Rs. 4.15 lakhs each. On one he gained 2% and on the other he lost 2%. What percent is the effect of the sale on the whole ?

A) 0.25 %	B) 0.04 %
C) 0.5 %	D) 0 %

Answer & Explanation Answer: B) 0.04 %

Explanation:

In this type cases we always have loss only.

Loss% = ${(\frac{C o m m o n G a i n o r L o s s}{10})}^{2}$ = ${(\frac{2}{10})}^{2}$ = 1/25 = 0.04 %

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Filed Under: Profit and Loss
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Q:

The first 8 alphabets are written down at random. what is the probability that the letters b,c,d,e always come together ?

A) 1/7	B) 8!
C) 7!	D) 1/14

Answer & Explanation Answer: D) 1/14

Explanation:

The 8 letters can be written in 8! ways.
n(S) = 8!
Let E be the event that the letters b,c,d,e always come together when the first 8 alphabets are written down.
Now the letters a, (bcde), f, g and h can be arranged in 5! ways.
The letters b,c,d and e can be arranged themselves in 4! ways.
n(E) = 5! x 4!
Now, the required P(E) = n(E)/n(S) = 5! x 4!/8! = 1/14
Hence the answer is 1/14.

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Filed Under: Probability
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Q:

Father of Email

Email1498884677.jpg image

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

Ray Tomilson

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Filed Under: Famous Personalities
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Q:

Number Challenge

Diamond_number1498884346.jpg image

A) 9	B) 11
C) 13	D) 15

Answer & Explanation Answer: B) 11

Explanation:

Half the Product of Number in the upper & lower box gives the number in the middle box.

i.e. 18 x 4/2 = 36

15 x 6/2 = 45

In the same way

8 x N/2 = 44 => N = 11.

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Filed Under: Number Puzzles
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