Which of the following is not like the others?

Question

Which of the following is not like the others? 
 
a.    6243             b. 8291                c. 1836             d. 3824                    e. 4433
 
The answer is d (the product of the digits in each of the groups, except group d is 144)
What is that mean?
 

Answer 1

The product is the answer to multiplication.

 

A number like 10 has two digits, 623 has three digits in it, 52,956 has five digits, and so on.

 

"The product of the digits in each of the groups, except group d, is 144" means:

6243 ⇒ 6*2*4*3 = 144

8291 ⇒ 8*2*9*1 = 144

1836 ⇒ 1*8*3*6 = 144

3824 ⇒ 3*8*2*4 = 192

4433 ⇒ 4*4*3*3 = 144

 

 

Answer 2

a. 6*2*4*3=144

b. 8*2*9*1=144

c. 1*8*3*6=144

d. 3*8*2*4=192

e. 4*4*3*3=144