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Q:

The letters of the word PROMISE are to be arranged so that three vowels should not come together. Find the number of ways of arrangements?

A) 4320	B) 4694
C) 4957	D) 4871

Answer & Explanation Answer: A) 4320

Explanation:

Given Word is PROMISE.

Number of letters in the word PROMISE = 7

Number of ways 7 letters can be arranged = 7! ways

Number of Vowels in word PROMISE = 3 (O, I, E)

Number of ways the vowels can be arranged that 3 Vowels come together = 5! x 3! ways

Now, the number of ways of arrangements so that three vowels should not come together

= 7! - (5! x 3!) ways = 5040 - 720 = 4320.

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Filed Under: Permutations and Combinations
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Q:

90 D in a R A

Answer

90 D in a R A => 90 degrees in a Right Angle.

This is similar to

26 L of the A = 26 Letters of the Alphabet

12 S of the Z.

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Subject: Logic Puzzles Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
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Q:

Lichens are the best indicator of

A) Air pollution	B) Sound pollution
C) Noise pollution	D) Water pollution

Answer & Explanation Answer: A) Air pollution

Explanation:

1. Lichens are plants that grow in exposed places such as rocks or tree bark.

2. Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere.

3. They need to be very good at absorbing water and nutrients to grow there.

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Filed Under: General Science
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Q:

What do we call a change to the Constitution?

A) A Bill	B) An Act
C) An Amendment	D) An Interpret

Answer & Explanation Answer: C) An Amendment

Explanation:

A change to the Constitution is called as An Amendment.

An Amendment ::

An Amendment is ratified after two-thirds of the House and Senate approve of the proposal and send it to the states for a vote. That Convention can propose as many amendments as it deems necessary. Then, three-fourths of the states must affirm the proposed Amendment.

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Filed Under: Indian Politics
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Q:

The circumference of a circular base of Cylinder is 44 cm and its hight is 15 cm. Then the volume of the cylinder is?

A) 2759 cub. cm	B) 2247 cub. cm
C) 2614 cub. cm	D) 2311 cub. cm

Answer & Explanation Answer: D) 2311 cub. cm

Explanation:

Given Circumference of a circular base of a cylinder = 44 cm

We know that Circumference of a circle = $2 πr = 44 \Rightarrow r = \frac{22}{π}$

Now given the height of a cylinder h = 15 cm

Volume of a cylinder $V = {πr}^{2} h = π {(\frac{22}{π})}^{2} 15 = \frac{22 x 22 x 15}{3.14} = 2311 {cm}^{3} .$

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Filed Under: Volume and Surface Area
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Q:

Find the Odd Number in the given Number Series?

3, 6.5, 14, 29, 64, 136

A) 14	B) 64
C) 29	D) 136

Answer & Explanation Answer: C) 29

Explanation:

The Given number series 3, 6.5, 14, 29, 64, 136 follows a pattern that

3

3 x 2 + 0.5 = 6.5

6.5 x 2 + 1 = 14

14 x 2 + 2 = 30 $\neq$ 29

30 x 2 + 4 = 64

64 x 2 + 8 = 136

Thus the wrong number in the series is 29

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Filed Under: Odd Man Out
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Q:

Two letters are randomly chosen from the word TIME. Find the probability that the letters are T and M?

A) 1/4	B) 1/6
C) 1/8	D) 4

Answer & Explanation Answer: B) 1/6

Explanation:

Required probability is given by P(E) = $\frac{n (E)}{n (S)} = \frac{1}{4 C_{2}} = \frac{1}{6}$

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Filed Under: Probability
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Q:

What is Iron Ore used for?

A) Aluminium	B) Copper
C) Steel	D) Brass

Answer & Explanation Answer: C) Steel

Explanation:

The primary use of iron ore is in the production of iron. Most of the iron produced is then used to make steel. Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items.

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Filed Under: General Science
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