Tag: math & puzzles

Multiplying numbers just over 100. 103 x 104 = ?

Find out the wrong number in the following sequence: 56,72,90,110,132,150

Find out the wrong number in sequence 2807,1400,697,347,171,84,41,20

Find out wrong number in the sequence 3,8,18,46,100,210,432

Find out wrong number in sequence 105,85,60,30,0,-45,-90

Find out wrong number in sequence 19,26,33,46,59,74,91

What is the result of - Lt tan x x->pi/2

x² /a² - y²/b² = 1 is the equation of a hyperbola. When |x| is very high the graph for the above equation resembles –

Two trains are 150 miles apart approaching each other at 60 mph and 90 mph respectively. A fly sitting on one train starts flying from it reaches the second train and immediately turns back and flies back to the first train,and turns around again. It goes on flying back and forth until the two trains collide. If the speed of the fly is 130 miles per hour, how much distance did it flied?