CAT Questions

Q:

A natural number when increased by 12 equals 160 times its reciprocal. Find the number?

A) 20 B) 12
C) 8 D) 4
 
Answer & Explanation Answer: C) 8

Explanation:

Let the required number be 'p'.

From the given data,

p + 12 = 160 x 1/p

=> p + 12 = 160/p

=> p(p + 12) = 160

=> P^2 + 12p - 160 = 0

=> p^2 + 20p - 8p - 160 = 0

=> P(p + 20) - 8(p + 20) = 0

=> (p + 20)(p - 8) = 0

=> p = -20 or p = 8

As, given the number is a natural number, so it can't be negative.

Hence, the required number p = 8.

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Filed Under: Problems on Numbers
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4 4070
Q:

2/3 as a decimal

A) 0.47 B) 6.77
C) 0.67 D) 0.07
 
Answer & Explanation Answer: C) 0.67

Explanation:

To convert a fraction into decimal, just take the number on top which we called the numerator and divide it by the number at the bottom which we called the denominator.

2/3

How it comes :

÷ 0 bring down the decimal point.

20 ÷ 6 and carry the remainder 2 to make 20

20 ÷ 6 and carry the remainder 2 to make 20

20 ÷ 6 and carry the remainder 2 to make 20

etc...

This gives the recurring decimal 0.6666...

If we round off to two decimals , then it becomes 0.67.

 

Hence, decimal fraction of 2/3 = 0.67.

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Filed Under: Decimal Fractions
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3 4068
Q:

Animal migration on savannas is often governed by

A) Rainfall B) Distance
C) Reproduction D) Fire
 
Answer & Explanation Answer: A) Rainfall

Explanation:

Savannas are home to a wide diversity of animals.

Many animals of the savanna migrate throughout the year, searching for food and water. Many of the droughts are seasonal and hit one area before another, so animals are constantly following the rains.

 

Hence, Rain fall is what often governs animal migration on savannas.

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Filed Under: World Geography
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1 4068
Q:

What is the motto of the Supreme Court of India?

A) Dharmo Rakshati Rakshitah B) Satyameva Jayate
C) Yato Dharmastato Jayah D) Sarve Jana SukhnoBhavanthu
 
Answer & Explanation Answer: C) Yato Dharmastato Jayah

Explanation:

The motto of the Supreme Court of India is "Yato Dharmastato Jayah" i.e, anytime truth wins. It was done in 1950.

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Filed Under: General Awareness
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1 4067
Q:

In how many different ways can the letters of the word 'POVERTY' be arranged ?

A) 2520 B) 5040
C) 1260 D) None
 
Answer & Explanation Answer: B) 5040

Explanation:

The 7 letters word 'POVERTY' be arranged in 7P7 ways = 7! = 5040 ways.

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Filed Under: Permutations and Combinations
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13 4066
Q:

Is DRAM Volatile or Nonvolatile?

Answer

DRAM is a Volatile random-access memory (VRAM).


 


Volatile random-access memory (VRAM) is random-access memory that retains its information when power is turned on.


Examples of volatile memory are primary storage (typically dynamic RAM, DRAM), and fast CPU cache memory (typically static RAM, SRAM, which is fast but energy-consuming and offer lower memory capacity per area unit than DRAM).


Non-volatile random-access memory (NVRAM) is random-access memory that retains its information when power is turned off.

Examples of non-volatile memory are flash memory (used as secondary memory) and ROM, PROM, EPROM and EEPROM memory (used for storing firmware such as BIOS). 

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Q:

Who has become First Female Pilot in Indian Navy?

A) Ritu Kumari B) Shubhangi Swaroop
C) Garima Sharma D) Rakhi Kumari
 
Answer & Explanation Answer: B) Shubhangi Swaroop

Explanation:

Shubhangi Swaroop, the First Woman Pilot inducted into Indian Navy.

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Filed Under: Famous Personalities
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11 4066
Q:

Name the Asian country that has 1st time turned around from a Net importer of electricity to Net Exporter of electricity, as per Central Electricity Authority of the country.

A) India B) Bangladesh
C) Myanmar D) Pakistan
 
Answer & Explanation Answer: A) India

Explanation:

As per Central Electricity Authority, the Designated Authority of Government of India for Cross Border Trade of Electricity, 1st time 'India' has turned around from a net importer of electricity to Net Exporter of electricity.

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Filed Under: General Awareness
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2 4059