If a = √2 + 1, b = √2 - 1 then the value of 1a+1+1b+1 ?
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If 1aa2+1 = 3, then the value of a6+1a3 is
The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?
A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:
The area of a triangle with vertices A (0, 8) , O (0,0) and B (5, 0) is:
The point of intersection of all the three medians of a triangle is called its
If (x+1/x) = 5, then the value of 5xx2+5x+1?
To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?