Find out the correct answer for the unsolved equation on the basis of the given equations.
If 6 * 5 = 91
8 * 7 = 169
10 * 7 = 211
then 11 * 10 = ?

Which two signs should be interchanged in the following equation to make it correct?
– 12 ÷ 4 + 8 x 2 = 11

Which of the following interchanges in signs and numbers will make the given equation correct?

8 x 9 + 2 = 74

Select the correct option that will fill in the blank and complete the series.
3, 9, 36, 180, ?

Which two numbers need to be interchanged to make the given equation correct?
96 x 6 - 8 ÷ 2 + 3 = 768

Which two signs need to be interchanged to make the given equation correct?
104 ÷ 8 + 6 - 9 x 3 = 34

Select the correct combination of mathematical signs to replace ‘*’ signs and to balance the given equation:
96*2*20*2*174

If Q means ‘add to’, J means ‘multiply by’, T means ‘subtract from’ and K means ‘divide by’, then 26 K 2 Q 3 J 6 T 4 = ?