1998 AHSME Problem 4

Number Theory Level 2

Define [a, b, c] to mean (a+b)/c, where c is not equal to 0. What is the value of

[[60, 30, 90], [2, 1, 3], [10, 5, 15]] ?

2 1 1.5 .5

2 solutions

Ajay Maheshwari
May 30, 2014

first we solve the each matrix which are in main matrix after that we got [1,1,1] in resultant matrix so now the answer we got 2 by add a+b and divided this by 1

Justin Wong
Mar 23, 2014

For all of the three small sets given, we note that $a+b=c$ . Hence, the value of each small set is $\frac{c}{c}=1$ . The value of the large set, which looks like $[1,1,1]$ , can then be evaluated as $\frac{1+1}{1}= 2$

Easy

Mardokay Mosazghi - 7 years, 2 months ago

1998 AHSME Problem 4

2 solutions

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