The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

Number System
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

1

4

2

3

1

4

2

3

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Number System
The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers?

171

169

168

170

171

169

168

170

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Number System
In how many different ways can be the letters of the word PENCIL be arranged among themselves ?

510

720

640

860

510

720

640

860

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Number System
The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ?

Rs. 820

Rs. 810

Rs. 830

Rs. 800

Rs. 820

Rs. 810

Rs. 830

Rs. 800

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Number System
Find the smallest number which should be multiplied with 520 to make it a perfect square.

55

120

None of these

30

55

120

None of these

30

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Number System
On a new year eve, every student of a class sends a card to every other student. If the total number of cards delivered is 1980, how many students are there in the class ?

45

41

47

43

45

41

47

43

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Number System

Number System The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

Number System The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers?

Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ?

Number System The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ?

Number System Find the smallest number which should be multiplied with 520 to make it a perfect square.

Number System On a new year eve, every student of a class sends a card to every other student. If the total number of cards delivered is 1980, how many students are there in the class ?

Number System
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

Number System
The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers?

Number System
In how many different ways can be the letters of the word PENCIL be arranged among themselves ?

Number System
The cost of 87 pens and 29 pencils is `783. What is the cost of 90 pens and 30 pencils ?

Number System
Find the smallest number which should be multiplied with 520 to make it a perfect square.

Number System
On a new year eve, every student of a class sends a card to every other student. If the total number of cards delivered is 1980, how many students are there in the class ?