Direction : What value should come in place question mark(?) in the following questions?

4 × 5² – 3² × 7 + 6²=?+24

Direction : What value should come in place question mark(?) in the following questions?

$$ 4{7\over 8}$$ - $$ 2{1\over 2}$$+$$ 1{3\over 4}$$=?

Direction : What value should come in place question mark(?) in the following questions?

25 % of 420 - ? % of 140=77

Direction : What value should come in place question mark(?) in the following questions?

$$2\over7$$ of $$ 5\over6$$ of ?=200

Of the three numbers, the sum of the first two is 55, sum of the second and third is 65 and sum of third with thrice of the first is 110. The third number is: 

If a and b are odd numbers, then which of the following is even?

A positive integer when divided by 425 gives remainder 45. When the same number is divided by 17, the remainder will be 

If the product of four consecutive natural numbers increased by a natural number p, is a perfect square; then the value of p is: