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Q:

Find the missing Number?

Find the missing number

Answer

How ?


7*6 = 4 2
9*9 = 8 1
5*3 = 1 5
6*2 = 1 2

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Subject: Number Puzzles

Q:

The Number of officially recognised languages in india is

A) 12 B) 15
C) 18 D) 21
 
Answer & Explanation Answer: C) 18

Explanation:

India has 18 officially recognised languages - Konkani, Manipur and Nepali were added to the official list of 15 in 1992. The other 15 languages are Assamese, Bengali, Gujarati, Hindi, Kannada, Kashmiri, Malayalam, Marathi, Oriya, Punjabi, Sanskrit , Tamil, Telugu , Urdu and sindhi.

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Filed Under: Indian Geography

Q:

Cell phone users have found that tariff plans are not as attractive as promoted by telecom companies and complained to regulatory authority about the same.

 

Courses of action:

I. The regulatory authority should direct telecom companies to be trasparent on the tariff structure of all plans

II. The government should restrict the number of telecom companies operating in the country.

A) If only course of action I follows B) If only course of action II follows
C) If either course of action I or II follows D) If both courses of action I and II follow
 
Answer & Explanation Answer: A) If only course of action I follows

Explanation:

Being " not as attractive as promoted " is a clear case of  hiding things. Hence " transparency " is the answer to the problem and I folloes. II goes against the spirit of free market and is not relevant to the problem either.

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Q:

The number of dropouts in govt schools has significantly increased in the urban areas over the past few years. 

 

Courses of action:

I. The govt should immediately close down all such schools in the urban areas where the dropout goes beyond 20 per cent

II. The parents of all the students who dropped out of the govt schools in urban areas should be punished.

A) If only course of action I follows B) If only course of action II follows
C) If either course of action I or II follows D) If both courses of action I and II follow
 
Answer & Explanation Answer: D) If both courses of action I and II follow

Explanation:

Both are extreme courses of action.

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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
 
Answer & Explanation Answer: A) 10

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.

 

Hence, required sum = (4 + 6 = 10)

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Q:

382  473  568  728  847  629

If 382 is written as 238, 473 as 347 and so on, then which of the following two numbers will have least difference between them?

A) 473 & 382 B) 629 & 728
C) 629 & 847 D) 728 & 847
 
Answer & Explanation Answer: D) 728 & 847

Explanation:

The given numbers are :

382  473  568  728  847  629

When changes are made as given in the question, numbers become as follows :

238  347  856  872  784  962

Again now, find out the difference between the numbers given in options as given below:

(1) 473 - 382  => 347 - 238 = 109

(2) 629 - 728  => 962 - 872 = 90

(3) 629 - 847  => 962 - 784 = 178

(4) 728 - 847  => 872 - 784 = 88

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Q:

In the following set of numbers, if 1 is added to the last digit and then the orderr of digits is reversed, which number will be fourth if arranged in ascending order?

567    284    696    865    738

A) 567 B) 284
C) 865 D) 738
 
Answer & Explanation Answer: A) 567

Explanation:

Here the given numbers are 

567  284  696  865  738

When 1 is added to the last digit of each of the above numbers, it becomes as follows :

568  285  697  866  739

After reversing the order of digits , we get

865  582  796  668  937

Now , when the numbers are arranged in ascending order their order becomes as follows:

582  668  796  865  937

Hence , the fourth number is 865 (a number formed by 567). Therefore option(1) is correct answer.

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Q:

If it is possible to make a number which is the square of a two-digit odd number using the second, the fourth and the sixth digits of the number  93217648 and using each only once, which of the following is that two-digit odd number?

A) 17 B) 19
C) 15 D) 21
 
Answer & Explanation Answer: B) 19

Explanation:

Second, fourth and the sixth digits of the number are 3, 1 and 6. Using these digits only once we can make 361, which is a perfect square number. Hence, our answer is 19 x 19 = 361

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