Equation Riddles

#81 - Maths Algebra Puzzle

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

#82 - Maths Operator Riddle

Can you get a sum of 1000 using sixteen 4s and only an addition operator

#83 - Tricky Maths Eqaution Problem

Can you solve this tricky maths equation problem by replacing ? mark with correct symbol ?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

#84 - Number Equation Puzzle

Solve the below equation by replacing each letter by different digit.

4 x (O N E) = T E N

Note: No letter can be replaced by number zero.

#85 - Tricky Number Equation Riddle

Can you write number 45 using only the number 4 ?

#86 - Hard Mathematics Expression Puzzle

You are given with six numbers – 1, 2, 3, 4, 5 and 6. You can arrange them in any order and you can use all the four mathematics expression i.e. add, subtract, multiply and divide and also parenthesis. The result must be 278.

There are three other rules
1) You can only use a number once.
2) It is not compulsory to use all the six numbers.
3) You can't join numbers i.e. you can't use 1, 2 and 3 as 123.

#87 - Fun Maths Riddle

There are four numbers given to you: 2, 3, 4 and 5. You are allowed to use only two mathematical symbols: + and = and come up with a mathematically true equation.

Can you do it?

PS- You can't repeat the symbols or numbers.

#88 - Math Fraction Riddle

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equals to 1/3.

You can use one number only once.

Hint:
The numerator will have four digits and the denominator will have five digits.

#89 - Algebraic Equation Puzzle

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

#90 - Easy Number Grid Puzzle

Look at the attached picture and find out missing number on the grid.