3!+4!=7!?

What is the mode of 3, -4, 3,7,9,7.5 ?

Factorise : 3-a(4+7a)

Solve: (-8/13 + 3/7) + (-13/4) = (....) + [3/7 + (-13/4)]

Let f = {(1,3), (2,4), (3,7)} and g = {(3,2), (4,3), (7,1)} determine gof?

sqrt(7+4sqrt3) - sqrt(7-4sqrt3) =

Which group of fractions are like fractions among the following? (i) (2)/(7), (3)/(7), (4)/(7) (ii) (1)/(2), (2)/(9), (4)/(9) (iii) (3)/(7), (4)/(9), (7)/(11)

If A=[[5, 6, 3], [-4, 3, 2], [-4, -7, 3]] , then co-factor of the elements of second row are