[" or not: "],[[" (a) "n+5=19(n=1)],[" (d) "4p-3=13(p=1)]]

Check whether the value given in the brackets is a solution to the given equation or not: (a) n+5=19(n=1) (b) 7n+5=19(n=-2) (c) 7n+5=19(n=2) (d) 4p-3=13(p=1) (e) 4p-3=13(p=4) (f) 4p-3=13(p=0)

Check whether the value given in the brackets is a solution to the given equation or not: (a) n+5=19(n=1)7n+5=19(n=1)7n+5=19(n=2)( d) 4p-3=13(p=1) (e) 4p-3=13(p=4)(f)4p-3=13(p=0)

Find n if : 2P( n,3) = P(n+1,3)

Find the value of n if ""^(n) P_(13) : ""^(n+1) P_(12) =(3)/(4)

solve for the Natural n, 12.(n-1)P_3 = 5.(n+1)p_3

The value of cot sum_(n=1)^(19)(cot^(-1)(1+sum_(p=1)^(n)2p)) is equal to (a) (21)/(19) (b) (19)/(21) (c) -(19)/(21) (d) -(21)/(19)

The value of cotsum_(n=1)^(19)cot^(-1)(1+sum_(p=1)^(n)2p) is equal to (a) (21)/(19) (b) (19)/(21) (c) -(19)/(21) (d) -(21)/(19)

The value of cot sum_(n=1)^(19)(cot^(-1)(1+sum_(p=1)^(n)2p)) is equal to ( a )(21)/(19) (b) (19)/(21)(c)-(19)/(21) (d) -(21)/(19)

If P(n, 5) : P(n-1, 4) = 6 : 1 then