CAT Exam Category

how many divisors of 86400 are there?

Read Solution (Total 4)

96
the method given below:
http://mathschallenge.net/library/number/number_of_divisors
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86400=2^7*3^3*5^2
so no of divisiors=(7+1)+(3+1)+(2+1)=96
10 years agoHelpfull: Yes(0) No(1)
86400=2^7*3^3*5^2=(7+1)*(3+1)*(2+1)=8*4*3=96
10 years agoHelpfull: Yes(0) No(0)
86400= 2^7*3^3*5^2
so total no of divisor= (7+1)(3+1)(2+1) = 8*4*3 = 96
10 years agoHelpfull: Yes(0) No(0)

CAT Other Question

Figure shows an equilateral triangle of side of length 5 which is divided into several unit triangles. A valid path is a path from the triangle in the top row to the middle triangle in the bottom row such that the adjacent triangles in our path share a common edge and the path never travels up (from a lower row to a higher row) or revisits a triangle. An example is given below. How many such valid paths are there? A certain school has 300 students each student reads 5 newspapers nad every newspaper is read by 60 students then the number of newspapers is?