ITC
Exam
Numerical Ability
Area and Volume
How many ways can 1500 be expressed as a product of three numbers
Read Solution (Total 5)
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- HCF OF 1500= 2^2*3*5^3
THEREFORE AS WE KNOW WHEN N=A^P*B^Q*C^R FOR PRODUCT OF 3 NUMBERS
IS EXPRESSED AS 1/2[(P+1)(Q+1)(R+1)]
SO HERE THE ANSWER IS 1/2 *24 = 12 - 8 years agoHelpfull: Yes(14) No(8)
- 7p3=7!/4!=210
- 8 years agoHelpfull: Yes(7) No(9)
- 1500=2*3*5*5*5*2
so by combining
combo1=(2*3)*(5*5)*(5*2)=1500
combo 2=(2*2)*(3*5)*(5*5)
combo3=(5*3)*(5*2)*(5*2)
ans.3 - 7 years agoHelpfull: Yes(3) No(2)
- 1500=25*20*3
- 9 years agoHelpfull: Yes(0) No(14)
- Express 3240 as a factors of prime nos
3240 = 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 = 23 x 34 x 5
so these 3 nos of 2's can be distributed to 3 integres a,b,c in : [3+(3-1)]C (3-1) ways i.e 5C2 = 10 ways
Nos of ways in which 4 nos of 3's can be distributed to 3 integers : [4+(3-1)]C (3-1) ways i.e 6C2 = 15 ways
Nos of ways in which 1 nos of 5 can be distributed to 3 integers : [1+(3-1)]C (3-1) ways i.e 3C2 = 3 ways
So total ways = 10 x 15 x 3 = 450 - 8 years agoHelpfull: Yes(0) No(1)
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