Find which one word cannot be formed from the given

Select the related alternative from the given:

Spring: Summer :: _______.

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

Select the option that is related to the third number in the same way as the second number is related to the first number.

55 : 86 :: 39 : ?

Select the number-pair in which the two numbers share a different relationship from that shared by the two numbers in the rest of the number-pairs.

Select the option that is related to the third word in the same way as the second word is related to the first word.

If 98 # 86 = 120 and 59 # 95 = 90, then 79 # 98 = ?

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

(72, 12, 36)

(40, 8, 25)

Select the option that is related to the third term in the same way as the second term is related to the first term.

PARENTS : RUMFQBO :: FORESTS : ?

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.

12 * 24 * 4 * 2 * 60