The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers?

Number System
The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers?

92

Cannot be determined

29

70

92

Cannot be determined

29

70

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Number System
The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number?

7

18

15

13

7

18

15

13

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Number System
Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number?

N2

N2 + 1

N(N + 1)

N(N + 1)/2

N2

N2 + 1

N(N + 1)

N(N + 1)/2

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

None of these

55

120

30

None of these

55

120

30

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Number System
What is the sum of all even numbers from 1 to 701?

122550

122850

123850

122500

122550

122850

123850

122500

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Number System
The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ?

68 years

66 years

69 years

67 years

68 years

66 years

69 years

67 years

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Number System

Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers?

Number System The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number?

Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number?

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

Number System What is the sum of all even numbers from 1 to 701?

Number System The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ?

Number System
The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers?

Number System
The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number?

Number System
Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number?

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

Number System
What is the sum of all even numbers from 1 to 701?

Number System
The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ?