The number of terms in the expansion of (3 + 2√5)¹⁸ - (3 - 2√5)¹⁸ is 

6th term in expansion of  is 

The number of terms in the expansion of (1 + 6x + 9x²)²³ is

The value of (0.99)¹⁵ is

If nN ,then x^2n-1+y^2n-1 is divisible by

Tenth term of the expansion (2x - y)⁷¹ is

ⁿc₀ - 1/2 ⁿc₁ + 1/3 ⁿc₂ - ........ + (-1)ⁿ  is equal to

The value of (1.002)¹² upto fourth place of decimal is

The sum of the coefficient in the expansion of (1+x - 3x²)²¹⁶³ will be

If in the expansion of (1 + x )ⁿ , the coefficient of r^th and (r + 2)^th term be equal , then r is equal to