Question

Which numbers should replace the question marks? 1, 50, 6, 45, 11, 40, 16, 35, 21, ?,

Answer 1

30

1, 50, 6, 45, 11, 40, 16, 35, 21, 30

Step-by-step explanation:

here you can find two sequences,

a), 1, 6, 11, 16, 21 ( +5 sequence)

b) 50, 45, 40, 35 ( -5 sequence) the missing number falls on this sequence, hence, 35-5= 30

Answer 2

Answer:30

Explanation: the third number 6 shows that the first number 1 has increased by five and the fourth number45 shows that the second number 50 has decreased by 5 and the patter continues un till the 1 has turned into 21 and the 50, 35 but the number 21 is the latest so you have to continue on with the second pattern, the decreasing 50 and 35 - 5 = 30