10
Q:

# If the digits in the number 25673948 are arranged in ascending order from left to right, what will be the sum of the digits which are fourth from the right and third from the left in the new arrangement?

 A) 10 B) 9 C) 8 D) 6

Explanation:

Given Number :      2 5 6 7 3 9 4 8

Ascending order :  2 3 4 5 6 7 8 9

Specified letters are 6 and 4 respectively.

$\inline \therefore$ required sum = (4 + 6 =) 10

Q:

A person is asked to put in a basket one apple when ordered 'one', one guava when ordered 'two', one orange whe ordered 'three' and is asked to take out from the basket one apple and one guava both when ordered 'four'. The ordered sequence executed by the person is as follows :

1 2 3 3 2 1 4 2 3 1 4 2 2 3 3 1 4 1 1 3 2 3 4

1. How many apples will be there in the basket at the end of the above order sequence ?
(a) 4     (b) 3     (c) 2    (d) 1

2. How many fruits will be there in the basket at the end of the above order sequence ?
(a) 13   (b) 17   (c) 9    (d) 11

Each time we order 1, one apple is added to the basket but each time when 4 is ordered, one apple is removed from it.

Required number of apples = number of 1's - number of 4's = 6 - 4 = 2

Each time we order 1, 2 or 3, one fruit is added to the basket but when ever we order 4, two fruits are removed from it.

Required number = Number of 1's + Number of 2's + Number of 3's - 2 x (Number of 4's)

= 6 + 6 + 7 - (2x4)
= 19 - 8
= 11.

34
Q:

In the series given below , how many 8's are there each of which is exactly divisible by its immediate preceeding as well as succeeding numbers ?
2 8 3 8 2 4 8 2 4 8 6 8 2 8 2 4 8 3 8 2 8 6

 A) five B) four C) two D) one

Explanation:

Clearly, we may mark such sets of 3 numbers, in which the middle number is 8 and each of the two numbers on both sides of it is a factor of 8, as shown below :

2 8 3 8 2 4 8 2 4 8 6 8 2 8 2 4 8 3 8 2 8 6

So, there are two such 8's. Hence the answer is C.

4 36
Q:

Vishal is 24th from either end of the row of boys ? How many boys are there in the row ?

 A) 48 B) 49 C) 46 D) 47

Explanation:

Given that Vishal is 24th from either end of the row i.e from two sides

1 2 3 4 5 . . . . . .24 23 22 21 20 . . . . . 5 4 3 2 1

Here before Vishal there are 23 members and after Vishal there are 23 members

= 23+1+23 $\Rightarrow$ 47 members in the row.

7 156
Q:

A bus for Shiridi leaves after every fifty two minutes from a bus stand. An enquiry officer told a passenger that the bus had already left sixteen minutes ago and the next bus will leave at 08:15 p.m. At what time did the enquiry officer give the information to the passenger?

 A) 07:23 p.m B) 06:25 p.m C) 07:39 p.m D) 06:23 p.m

Explanation:

7 252
Q:

If it is possible to form a number with the second, the fifth and the eighth digits of the number 31549786, which is the perfect square of a two - digit even number, which of the following will be the second digit of that even number ?

 A) 1 B) 4 C) 6 D) None of these

Explanation:

The 2nd, 5th and 8th digits of the number 31549786 are 1, 9 and 6 respectively.

The perfect square of a two - digit even number, formed using the digits 1, 9 and 6 is 196. And, $\inline 196 = 14^{2}$

So, the required even number is 14. Clearly, its second digit is 4.