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Subject : **Aptitude**

**Question 1:**A Function consists of grandmother, father,mother, four sons and their wives and one son and two daughters to each of the sons. how many females are there is all?

(a) 15 (b) 16 (c) 18 (d)

**14 Answer 14**

**Solution :**Grandmother is one Female, Mother is another, wives of four sons are the four females and two daughters of all four sons are eight females.

*1+1+4+8=14 Females*

**Question 2:**Sum of all odd numbers up to100 is ..

(a) 5050

**(b) 2500**(c) 2525 (d) 5000

**Solution:**Given numbers are 1,3,5....99.

This is an A.P with a=1, d=2.

Let it contain n terms

1+(n-1)2=99 --> n=55

hence required sum=n/2(first term +last term)

=50/2(1+99)=2500.

**Question 3:**GATE | GATE CS 2013 | GATE Exam

What will be the maximum sum of 44, 42, 40, …… ?

(A) 502 (B) 504

**(C) 506**(D) 500

Explain: Click

**Question 3:**If 137 + 276 = 435 how much is 731 + 672 ? solve 1 Minute

( A) 534 (B) 1403

**(C) 1623**(D) 1513

Explain: Click

##
Subject : **Aptitude - Time and Distance**

1. 400m long train is running at 72 Kmph. how much time it will take to cross an electric pole?

A.) 15sec

**B.) 20sec**

C.) 19sec D.) 21sec

**Solution:**

Distance = Speed * Time

If we convert Kmph in to Mpsec multiply by 5/18,

400 = 72 KmpH * time

400 = 72*5/18 * time

Time = 20Sec

2.A 180m long train is running at 54 Kmph. how much time it will take to cross a platform of 120m long?

**A.) 20sec**B.) 22sec

C.) 19sec D.) 18sec

**Solution**:

D = S * T

180 = 54 Kmph * Time

180= 54*5/18 * Time

Time = 20 Sec

3.320m long train is running at 72 Kmph. how much time it will take to cross a platform of 180m long?

A.) 20sec

**B.) 25sec**

C.) 30sec D.) 27sec

**Solution :**

Total Length = platform Length+ Train Length

Total Length= 500m

D = S * T

4.A 600m long train is running at 90 Kmph. how much time it will take to cross an electric pole?

A.) 16sec B.) 20sec

**C.) 24sec**D.) 22sec

**Solution**

D = S * T

600 = 90 Kmph * T

> 600 = 90 * 5/18 * T

Time = 24Sec

5.Two trains 300m and 400m long run at the speeds of 40 kmph and 50kmph respectively in opposite Directions on parallel tracks. The time taken to cross each other?

A.) 20sec B.) 25secs

C.) 26sec

**D.) 28sec**

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**Solution : Self Study**

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