Numbers

If a number ends with 1 or 9, its square ends with
1. 1
2. 4
3. 6
4. 9
If a number ends with 2 or 8, its square ends with
1. 1
2. 4
3. 6
4. 9
If a number ends with 3 or 7, its square ends with
1. 1
2. 4
3. 6
4. 9
If a number ends with 4 or 6, its square ends with
1. 1
2. 4
3. 6
4. 9
If a number ends with 5, its square ends with
1. 1
2. 4
3. 5
4. 0
If a number ends with 0, its square ends with
1. 0
2. 4
3. 5
4. 9
Square of an odd number is always
1. Odd
2. Even
3. Can be odd or even
4. none of these
Square of an even number is always
1. Odd
2. Even
3. Can be odd or even
4. None of these
Numbers that end with 2,3,7 and 8 are
1. Square numbers
2. Perfect squares
3. Not Perfect squares
4. Squared numbers
(1 + 2 + 3 + ..... + n)² =
1. 1² + 2² + 3² +....+ n²
2. 1³ + 2³ + 3³ + ....+ n³
3. (1 + 2 + 3 +...+ n )³
4. ( 1² + 2² + 3² +....+ n² )²
The sum of the first n consecutive odd natural numbers is
1. n
2. n²
3. n³
4. None of these
Sum of first five numbers 1 + 3 + 5 + 7 + 9.
1. 3²
2. 5²
3. (1+9)²
4. √ 5
The sum of the odd natural numbers 1 + 3 + 5 + 7 + ... ... ... + 99
1. 100²
2. 99²
3. 50²
4. 49²
Which concept is used to describe the Pythagorean Triplet?
1. Square
2. Square root
3. Cube
4. Cube root
Pythagorean triplet
1. The sum of the first n consecutive odd natural numbers is n².
2. The square of an odd number can be written as the sum of two consecutive natural numbers.
3. A perfect number cannot be a square number.
4. The sum of the squares of any two equals the square of the third.
Three numbers a, b, c make a Pythagorean triplet
1. a² + b² + c² = 0
2. (a+b)² = c²
3. a² + b² = c²
4. a² + b² ≠ c²
(20, 21, 29) is a Pythagorean triplet or not ?
1. Yes, 20² + 29² = 21²
2. No, 20² + 29² ≠ 21²
3. Yes, 20² + 21² = 29²
4. No, 20² + 21² ≠ 29²
Which is the following is a Pythagorean triplet
1. (6, 8, 10)
2. (5, 7, 12)
3. (4, 8, 9)
4. (6, 7, 8)
Subtraction is the inverse of
1. Addition
2. Multiplication
3. Division
4. Above all
Division is the inverse of
1. Addition
2. Subtraction
3. Multiplication
4. Above all
Square is the inverse operation of
1. Perfect square
2. Square root
3. Cube values
4. Cube root
√ 2.25
1. 0.5
2. 1.5
3. 0.15
4. 0.05
Find the value √ 116.64
1. 1.08
2. 1.02
3. 10.8
4. 10.2
√ pq =
1. √ p + √ q
2. √ p - √ q
3. √ p × √ q
4. √ p / √ q
√ 5 × √ 45
1. 15
2. 25
3. 5
4. 35
The value of √ 250 lies between integers
1. 12 and 14
2. 13 and 15
3. 14 and 16
4. 15 and 17
The cube of a negative number is
1. Positive
2. Negative
3. Can be positive or negative
4. None of these
The square of negative number is
1. Positive
2. Negative
3. Can be positive or negative
4. None of these
If a natural number ends with 3, its cube ends with
1. 2
2. 3
3. 5
4. 7
Find the cube root of 2197
1. 17
2. 27
3. 13
4. 23
If a natural number ends with 2, its cube ends with
1. 2
2. 4
3. 6
4. 8
The cube root of 0.000027
1. 0.3
2. 0.03
3. 3
4. 0.003
The cube root of 1.331
1. 1.1
2. 1.01
3. 1.3
4. 1.03
a⁰ =
1. 0
2. 1
3. ∞
4. None of these
a^-m =
1. 1/a
2. a^m
3. 1/a^m
4. None of these
a^m × aⁿ =
1. a^m+n
2. a^m-n
3. a^mn
4. a^m/n
2^-3 × 2² =
1. 2¹
2. 2⁵
3. 2^-1
4. 2^-5
2^-3 / 2² =
1. 2¹
2. 2⁵
3. 2^-1
4. 2^-5
(2^-3)² =
1. 2^-1
2. 2^-5
3. 2⁶
4. 2^-6
Scientific notation for 0.0000432
1. 0.432 × 10 ⁵
2. 0.432 × 10 ^-5
3. 4.32 × 10 ⁵
4. 4.32 × 10 ^-5