If pqr = 1, the value of the expression (1/(1 + p + q^-1)) + (1/(1 + q + r^-1)) + (1/(1 + r + p^-1)) is equal to

If a + b + c = 13, a² + b² + c² = 69, then find ab + bc + ca.

√00004761 equals

If log 2=0.30103, the number of digits in 4⁵⁰ is

[log(a²/bc)+log(b²/ac)+log(c²/ab)] is equal to

√571536/42 * ?=5850

If log 2=0.30103, the number of digits in 2⁴⁶ is

If 5√5 x 5³ + 5^-3/2 = 5^a+2, then the value of a is:

The value of √0.16/0.4 is

If log₁₀ 2=0.3010, then log₂ 10 is equal to