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Q:

To fill 8 vacancies there are 15 candidates of which 5 are from ST. If 3 of the vacancies are reserved for ST candidates while the rest are open to all, Find the number of ways in which the selection can be done ?

A) 7920	B) 74841
C) 14874	D) 10213

Answer & Explanation Answer: A) 7920

Explanation:

ST candidates vacancies can be filled by ${}^{5}C_{3}$ ways = 10

Remaining vacancies are 5 that are to be filled by 12

=> ${}^{12}C_{5}$ = (12x11x10x9x8)/(5x4x3x2x1) = 792

Total number of filling the vacancies = 10 x 792 = 7920

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Filed Under: Permutations and Combinations
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Q:

If K earns 12% less than L, then how much percent more does L earn than K ?

A) 13.96%	B) 13.63%
C) 13.56%	D) 14.01%

Answer & Explanation Answer: B) 13.63%

Explanation:

Required % is given by

=> $\frac{12}{100 - 12} x 100$

= 1200/88

= 13.636%

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Filed Under: Percentage
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Q:

Which Indian film has been selected as India's official entry in the Best Foreign Language Film category at Oscars 2018 ?

A) Bahubali	B) Bhoomi
C) Newton	D) Daddy

Answer & Explanation Answer: C) Newton

Explanation:

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Filed Under: Honours and Awards

Q:

Crack the following Logical WordPuzzle ?

21686498_1422856854488081_4594340323462201417_n1506331278.jpg image

Answer

Maps.

Workspace

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Subject: Word Puzzles Exam Prep: Bank Exams , CAT , GRE , TOEFL
Job Role: Bank Clerk

Q:

A train travelling at 48 kmph crosses another train, having half its length and travelling in opposite direction at 42 kmph, in 12 sec. It also covers a bridge in 45 sec. Find the length of the bridge ?

A) 250 mts	B) 400 mts
C) 320 mts	D) 390 mts

Answer & Explanation Answer: B) 400 mts

Explanation:

Let the length of the 1st train = L mts

Speed of 1st train = 48 kmph

Now the length of the 2nd train = L/2 mts

Speed of 2nd train = 42 kmph

Let the length of the bridge = D mts

Distance = L + L/2 = 3L/2

Relative speed = 48 + 42 = 90 kmph = 90 x 5/18 = 25 m/s(opposite)

Time = 12 sec

=> 3L/2x25 = 12

=> L = 200 mts

Now it covers the bridge in 45 sec

=> distance = D + 200

Time = 45 sec

Speed = 48 x5/18 = 40/3 m/s

=> D + 200/(40/3) = 45

=> D = 600 - 200 = 400 mts

Hence, the length of the bridge = 400 mts.

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Filed Under: Problems on Trains
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

When was Uttarakhand separated from Uttar pradesh to form new state ?

A) 1997	B) 1998
C) 1999	D) 2000

Answer & Explanation Answer: D) 2000

Explanation:

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Filed Under: Indian Geography
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Q:

Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?

A) Amino acid	B) Sulfur
C) Carbon	D) Fat

Answer & Explanation Answer: B) Sulfur

Explanation:

Cutting and Peeling of onion brings Tears to the eyes because of presence of Sulphur in the cell.

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Filed Under: Chemistry
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Q:

What should come in place of question mark (?) in the following number series?

38, 195, ?, 4905, 24530, 122655

A) 980	B) 885
C) 824	D) 1021

Answer & Explanation Answer: A) 980

Explanation:

The given series follows the pattern that,

×5+5, ×5+5, ×5+5, ×5+5, ×5+5

38 x 5 + 5 = 195

195 x 5 + 5 = 980

980 x 5 + 5 = 4905

4905 x 5 + 5 = 24530

24530 x 5 + 5 = 122655

So the missing number is 980 .

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Filed Under: Odd Man Out
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