Numbers
Competitive exam Questions and Answers on Numbers.
-
Divisibility Rule for 7 – 3 Different Methods Explained with Examples
In this section, we’ll explore three methods: A number is said to be divisible by 7 if it can be divided by 7 without leaving any remainder. Instead of performing long division every time, there is a shortcut rule: 1.…
-
If (10a+b) is divisible by 7 then will ( a−2b ) also be divisible by 7 ?
Let , S = 10a + b If “S” is divisible by 7 then if we substract or add any multiple of “7” to “S ” then resultant number will still be divisible by “7” So we get, S -7a…
-
Find X = ????
From image find value of X = ????
-
Is 48,324,936,583 divisible by 7 ?
Solved using divisibility rule for ‘ 7 ‘
-
Find units digit in
We know 4^2 = 16 4^4 = 256 So all even powers of 4 will give 6 at units place. So in the expansion of both given expressions we get 6 at units place. Hence we get, 6 + 6…
-
How many number of trailing zeros are there in 30! ?
As we know 30! = 30 x 29 x 28 ………………………..x 3 x 2 x 1 Lets divide the answer into three parts First lets mutiply 1 to 10 1 x 2x 3 x 4 x 5 x 6 x…
-
How many number of trailing zeros are there in 10! ?
We know 10! = 10x9x8………x3x2x1 So we get one trailing zero from 10 itself Smilarly we get another trailing zero from 5×2 = 10 Thus answer is ‘ 2 ‘
-
How many number of trailing zeros are there in 100! ?
As we know 100! = 100 x 99 x 98 ………………………..x 3 x 2 x 1 First lets mutiply 1 to 10 1 x 2x 3 x 4 x 5 x 6 x 7 x 8 x 9 x 10…
- Angles
- Area
- Divisibility Tests
- Indices
- Lines
- Numbers
- Quantitative Aptitude
- Triangles
- Unit Conversion
Angle of Triangle Area Of Triangle Complimentary Angles Divisibility Rule For 7 Equilateral Triangle Job Interview Questions Parallel lines Properties of Triangle Questions Answers on Factorial Questions Answers on Numbers Right Angle Triangle Unit Conversion in Weight
