instruction:
You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
question:
Question: There are six cards in which it has two king cards. all cards are turned down and two cards are opened what is the possibility to get two kings.

 Option A: 1/15

 Option B: 2/15

 Option C: 3/15

 Option D: 4/15

 Option E: 6/15
answer:
Option A


question:
Question: On dividing 21 by a number, the quotient is 10 and the remainder is 1. Find the divisor.

 Option A: 1

 Option B: 2

 Option C: 4

 Option D: 6

 Option E: 7
answer:
Option B


question:
Question: Find the fourth proportional to 4, 9, 12

 Option A: 17

 Option B: 37

 Option C: 47

 Option D: 67

 Option E: 27
answer:

Option E