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:
Correct answer A. 20
Topic / 47 questions
Problems on Numbers MCQs
Page 3 of Problems on Numbers multiple-choice questions with answers. Tap an option to check yourself.
Page 3 of 3
- Numbers 104
- Percentage 103
- Age Questions 95
- Profit and Loss 82
- Ratio and Proportion 80
- Time and Work 73
- Alligation or Mixture 73
- Fraction and Decimal 72
- Compound Interest 71
- Simple Interest 69
- Area 64
- Volume and Surface Area 64
- Equations and Inequalities 64
- Time and Distance 64
- Simplification 60
- Permutation and Combination 59
- Average 59
- Basic Algebra 58
- Pipes and Cistern 57
- Partnership 56
- Square Root and Cube Root 51
- Problems on Numbers 47
- Probability 45
- Problems on Trains 44
- Odd Man Out and Series 43
- Surds and Indices 43
- Clock 39
- Races and Games 38
- Height and Distance 37
- True Discount 36
- Stocks and Shares 34
- Boats and Streams 34
- Banker's Discount 32
- Counting 32
- Logarithm 30
- Problems on H.C.F and L.C.M 30
- Calendar 30
- Road Problems 26
- Word Problems 25
- Men and Food 24
The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number?
Correct answer D. Cannot be determined
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:
Correct answer B. 24
Advertisement
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1: 2?
Correct answer B. 8
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
Correct answer B. 4
Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:
Correct answer D. 15
If one-third of one-fourth of a number is 15, then three-tenth of that number is:
Correct answer D. 54