Aptitude | Numbers

If a and b are odd numbers, then which of the following is even ?

Byadmin July 18, 2022

Question:
If a and b are odd numbers, then which of the following is even ?

[A].

a + b

[B].

a + b + 1

[C].

[D].

ab + 2

Answer: Option A

Explanation:

The sum of two odd number is even. So, a + b is even.

Aptitude | Time And Distance

In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay’s speed is:

Question:
In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay’s speed is:

[A].

5 kmph
[B].
6 kmph
[C].
6.25 kmph
[D].
7.5 kmph

Answer: Option A

Explanation:

Let Abhay’s speed be x km/hr.

Then, 30 – 30 = 3

x 2x

6x = 30

x = 5 km/hr.

Read More In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take 1 hour less than Sameer. Abhay’s speed is:
Aptitude | Numbers

A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:

Question: A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:
[A].

1
[B].
2
[C].
8
[D].
11

Answer: Option A

Explanation:

Let x = 296q + 75

= (37 x 8q + 37 x 2) + 1

= 37 (8q + 2) + 1

Thus, when the number is divided by 37, the remainder is 1.

Read More A number when divided by 296 leaves 75 as remainder. When the same number is divided by 37, the remainder will be:
Basic Maths Mcqs | Boats and Streams | Mathematics Mcqs

A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?

A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?

A. 50km
B. 60km
C. 70km
D. 80 km
Explanation:
Let the distance between the two parts be x km.
Then speed downstream = x/4 km/hr.
Speed Upstream = x/5 km/hr
Speed of the stream = ½ (x/4 –x/5)
Therefore, ½(x/4 –x/5) = 2. => x/4 –x/5 = 4 => x = 80.
Hence, the distance between the two ports is 80km.

Read More A steamer goes downstream from one port to another in 4 hours, it covers the same distance upstream in 5 hours. If the speed of the stream is 2km/hr,the distance between the two parts is_______?
Compound Interest | Mathematics Mcqs

The difference between simple interest and compound interest at the same rate for Rs.5000 for 2 years is Rs. 72. The rate of interest is?

The difference between simple interest and compound interest at the same rate for Rs.5000 for 2 years is Rs. 72. The rate of interest is?

A. 10 %
B. 12 %
C. 6 %
D. 8 %
Explanation:
5000 × (1 +R/100) 2 – 5000 –(10000R/100)= 72
=> 5000 [(1 + R/100) 2 – 1 – R/50] = 72
=> 1 + R2/100 + 2R/100 – 1 – R/50 = 72/5000
=> R2 = (72/5000 × 10000) = 144 or R =12%

Read More The difference between simple interest and compound interest at the same rate for Rs.5000 for 2 years is Rs. 72. The rate of interest is?
Aptitude | Odd Man Out And Series

1, 2, 6, 15, 31, 56, 91

Question: 1, 2, 6, 15, 31, 56, 91

[A].

31
[B].
91
[C].
56
[D].
15

Answer: Option B

Explanation:

1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92

Last number of given series must be 92 not 91.

Read More 1, 2, 6, 15, 31, 56, 91
Aptitude | Problems On Ages

Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q’s age?

Question: Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q’s age?
[A].

1 year
[B].
2 years
[C].
25 years
[D].
Data inadequate

Answer: Option D

Explanation:

Given that:

1. The difference of age b/w R and Q = The difference of age b/w Q and T.

2. Sum of age of R and T is 50 i.e. (R + T) = 50.

Question: R – Q = ?.

Explanation:

R – Q = Q – T

(R + T) = 2Q

Now given that, (R + T) = 50

So, 50 = 2Q and therefore Q = 25.

Question is (R – Q) = ?

Here we know the value(age) of Q (25), but we don’t know the age of R.

Therefore, (R-Q) cannot be determined.

Read More Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q’s age?

Then,	30	–	30	= 3
	x		2x

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