Evaluate : `^25C_22-^24C_21`

Evaluate: .^(20)C_(5)+^(20)C_(4)+^(21)C_(4)+^(22)C_(4)

Find the value of -^(22)C_(16)+^(22)C_(15)

Prove that : ""^(25)C_(10)+""^(24)C_(10)+……..+""^(10)C_(10)=""^(26)C_(11)

Evaluate : (vi) (8)/(-5)-:(24)/(25)

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + … + (.^(21)C_(10) - .^(10)C_(10)) is

Evaluate: [9+(7-8)]-[(21+6)-(22-15)]

If .^25 C_0 + 5 .^25 C_1 + 9 .^25 C_2 .... 101 .^25 C_25 = 2^(25) k find k = ?

If 25C_0 25C_2 +2. 25C_1 25C_3 +3. 25C_2 .25C_4+....+ 24. 25C_23.25C_25=k. 49C_lambda+50C_mu , then the value of 2k-lambda-mu is greater than (where mu,lambda lt 25 )

Find the value of: -21+(-9)+63+(-22)+(-228)+137

Evaluate: c. (14)/(25 ) xx (20)/( 49)