The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

Number System
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

20

None of these

40

30

20

None of these

40

30

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Number System
If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ?

29

27

30

28

29

27

30

28

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Number System
7.8 x 4.5 x 4.2/0.14 = ?

1053

1032

1087

1012

1053

1032

1087

1012

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Number System
1260 x 1.45 - 888 x 1.75 = ?

367

273

295

256

367

273

295

256

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Number System
The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ?

1468

1327

1292

1168

1468

1327

1292

1168

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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 ?

41

45

43

47

41

45

43

47

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Number System

Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

Number System If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ?

Number System 7.8 x 4.5 x 4.2/0.14 = ?

Number System 1260 x 1.45 - 888 x 1.75 = ?

Number System The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ?

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 sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is:

Number System
If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ?

Number System
7.8 x 4.5 x 4.2/0.14 = ?

Number System
1260 x 1.45 - 888 x 1.75 = ?

Number System
The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ?

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 ?