The mean of the data 2, 9, 9, 3, 6, 9, 4 is
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If 2cos2A - 1 = x, then the value of x is
∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?
If x4+1x4=119, then the value of x-1x is
The side BC of the ΔABC is extended to the point D. If ∠ ACD = 112° and ∠B = 3/4 ∠A, then the value of ∠B is
The sum of three consecutive even numbers is 42. Find the middle number.
What is the distance between the points (3 , 6) and (-2 , -6)?
If a + b = 10 and ab = 24, then the value of a3 + b3 is