Find `40 - (22)`

Find tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@)tan40^(@) .

Find 22 g = _____ kg

Write true or false. i) 15 : 30 :: 30 : 40, ii) 22 : 11 :: 12 : 6.

Find the HCF of 40, 56, and 60.

Find the HCF of 40, 56 and 60.

Find the degree measure of the angle subtended at the centre of a circle of radius 100 cm by an arc of length 22 cm (Use pi = (22)/(7) ).

Find the absolute extremum of f(x)=x^(2) is defined on [-2,2]

Find the circumference of a circle with radius 12 cm. (Take pi = (22)/(7) )

Write true of false. i) 15 : 30 :: 30 : 40, ii) 22 : 11 :: 12 : 6, iii) 90 : 30 :: 36 : 12, iv) 30 : 64 :: 6 : 12, v) 25 : 1 :: 40 : 160.

Find the sum of the first 40 positive intergers divisible by 6.