Question

Find the analogy: 6 : 15 : : 143 : ______ select one:

a. 195

b. 323

c. 287

d. 221

Answer 1

Answer:

195.........I think it is .... right

Answer 2

Answer:

Our given question is the Number Analogy.We should find the logic between on the left hand side terms.Then we have to apply the same logic for the right side terms.

Final Answer: Option d: 221

Analogy :   6 : 15 : : 143 : 221

Step-by-step explanation:

From the given question,

Step 1:

• First we consider the L.H.S terms. That is,

              ⇒  $6 : 15$

• Next find the combination between 6 and 15. Combination of both values are multiplied by the consecutive prime numbers.
• Prime numbers: Prime numbers are numbers that can be divided by 1 and itself.

             ⇒ $6=2\times3$

            ⇒ $13=3\times5$

• The above values 2,3,5 are the prime numbers.It can be divided by 1 and itself(2,3,5).

Step 2:

• Now take the R.H.S terms. That is,

              ⇒  $143 : ?$

• 143 can be written as,

             ⇒ $143=11\times13$

• The above values 11,13 are the prime numbers.To get the right side value we should multiply the next prime numbers.
• That is, multiply 13 and 17.Then we get the missing number in the analogy.

            ⇒ $13\times17=221$

Final Answer: Option d: 221

Analogy :   6 : 15 : : 143 : 221