Test Preparation on GATE CS Mock Tests-4

1.

Suppose there are two teams A and B. Both of them are competing with each other on a racing track of 1 km. But team A has got the advantage of starting the race from 280 m from the starting point. If the ratio of speed of A to B is 3:4.

Select the correct option from the options given below:

A

Team A will win by 20m

B

Team B will win by 20m

C

Team A will win by 40m

D

Team B will win by 40m

1A
2B
3C
4D

To win the race first, A has to cover (1000 – 280) m = 720m B covers 4 part of distance when A covers 3 part of it. So, if A covers 720m, then B covers (4/3 * 720)m i.e. 960m Hence, A will win the race by 40m.

2.

There are 5 brothers in a family. All were born at a gap of 3 years. If the sum total of ages of 5 brothers is 100. What is the age of 2nd most elder brother ?

113
215
323
426

Let the age of youngest brother be x Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 100 => 5x = 70 => x = 14 Therefore, age of 2nd most elder brother = 14 + 9 = 23.

3.

If there are 5 persons who can work individually and complete a work in 2, 4, 5, 6 and 8 hours respectively. If they work together then how much time will it take to finish the work ?

A

2.36 hours

B

1.24 hours

C

0.80 hours

D

2.56 hours

1A
2B
3C
4D

In 1 hour, ½ + ¼ + ⅕ +⅙ + ⅛ = 149/120 = 1.24 is the work done. Hence, total time to complete the work would be = 1/1.24 = 0.80 hours

4.

If we increase the sides of a rectangular park by 20% , then, what is the total increase in the area of that park?

121 %
233 %
342 %
444 %

Let length of park = L and breadth of park = B Original Area = BL m2 New Length = 120L/100 = 6L/5 New Breadth = 120B/100 = 6B/5 New Area = 36LB/25 m2 so, Change in area = New – Original = 11LB/25 m2 % increase = Change / original * 100 = 44%

5.

The sum of the digits in the unit place of all the 4 digit numbers formed with the help of 3, 4, 5 and 6 taken all at a time is:

118
2108
3432
4144

Required sum = 3!(3 + 4 + 5 + 6) = 108 [If we fix 3 of the unit place, other three digits can be arranged in ways similarly for 4, 5, 6.]

6.

Choose the one that best fits the sentence below.

The state’s duty is to _______ the safety of its citizen

A	assure
B	insure
C	ensure
D	make sure

1A
2B
3C
4D

7.

Cocaine will have pernicious effect on your physical fitness.

Find synonym of the underlined word.

A

insidious

B

malicious

C

prolonged

D

boggling

1A
2B
3C
4D

There are 5 brothers in a family. All were born at a gap of 3 years. If the sum total of ages of 5 brothers is 100. What is the age of 2nd most elder brother ?

If there are 5 persons who can work individually and complete a work in 2, 4, 5, 6 and 8 hours respectively. If they work together then how much time will it take to finish the work ?

A

2.36 hours

B

1.24 hours

C

0.80 hours

D

2.56 hours

If we increase the sides of a rectangular park by 20% , then, what is the total increase in the area of that park?

The sum of the digits in the unit place of all the 4 digit numbers formed with the help of 3, 4, 5 and 6 taken all at a time is:

Choose the one that best fits the sentence below.

The state’s duty is to _______ the safety of its citizen

A

assure

B

insure

C

ensure

D

make sure

Cocaine will have pernicious effect on your physical fitness.

Find synonym of the underlined word.

A

insidious

B

malicious

C

prolonged

D

boggling

Check your progress:

A	Team A will win by 20m
B	Team B will win by 20m
C	Team A will win by 40m
D	Team B will win by 40m


Right Ans	Wrong Ans	Not Attempted

Test Preparation on GATE CS Mock Tests-4

There are 5 brothers in a family. All were born at a gap of 3 years. If the sum total of ages of 5 brothers is 100. What is the age of 2nd most elder brother ?

If there are 5 persons who can work individually and complete a work in 2, 4, 5, 6 and 8 hours respectively. If they work together then how much time will it take to finish the work ? A 2.36 hours B 1.24 hours C 0.80 hours D 2.56 hours

If we increase the sides of a rectangular park by 20% , then, what is the total increase in the area of that park?

The sum of the digits in the unit place of all the 4 digit numbers formed with the help of 3, 4, 5 and 6 taken all at a time is:

Choose the one that best fits the sentence below. The state’s duty is to _______ the safety of its citizen A assure B insure C ensure D make sure

Cocaine will have pernicious effect on your physical fitness. Find synonym of the underlined word. A insidious B malicious C prolonged D boggling

Check your progress:

If there are 5 persons who can work individually and complete a work in 2, 4, 5, 6 and 8 hours respectively. If they work together then how much time will it take to finish the work ?

A

2.36 hours

B

1.24 hours

C

0.80 hours

D

2.56 hours

Choose the one that best fits the sentence below.

The state’s duty is to _______ the safety of its citizen

A

assure

B

insure

C

ensure

D

make sure

Cocaine will have pernicious effect on your physical fitness.

Find synonym of the underlined word.

A

insidious

B

malicious

C

prolonged

D

boggling