sum of 2 missing numbers of the sequence 6, ?, 20, 15, ?, 1 will be

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10 Sep 2012 sequence sum of 2 missing numbers of the sequence 6, ?, 20, 15, ?, 1 will be: OPtion
1) 15
2) 17
3) 19
4) 20
5) 21
6) 23
7) 25
8) 27
9) 30
10) none of these; Correct Option: 5 Best Solution (7)

Ajay Kashyap 12 years AGO

patten is : 6,13,20,15,8,1
as difference is as
6+7 = 13
13+7 = 20
15-7 = 8
8-7 = 1

Like? Yes (11) | No (2)

Jason 12 years AGO

21
because in
6, ?, 20, 15, ?, 1

Sum of first and 4th term = 6+15=21
Sum of third and sixth term = 20+1=21
so sum of 2nd and 5th term should also be 21.

Like? Yes (4) | No (2)

Pranaya 12 years AGO

6,a,20,15,b,1
if a=13 and b=8 then
13-6=7 and 20-13=7 similarly
15-8=7 and 8-1=7
a+b=13+8=21

Like? Yes (3) | No (3)

Ganga Prasad Bhusal 12 years AGO

series will be...6,13,20,15,8,1 difference between the terms will be.7,7,5,7,7..so sum=13+8=21

Like? Yes (1) | No (3)

ArunKumar 12 years AGO

6+ 15 = 21
20 + 1 =21
Answer 12

Like? Yes (2) | No (4)

Narender Bhardwaj 12 years AGO

Given series is
6, ?, 20, 15, ?, 1,
=6,(6+7),(13+7),15,(15-7),(8-7),....
=6,13,20,15,8,1.....
Hence sum of missing numbers is=13+8=21 ans

Like? Yes (1) | No (3)

sagar arora 12 years AGO

the sum of 2 nos in a series separated in a series by 2 nos is the avg of these and their extreme nos

Like? Yes (1) | No (5)

Dimple

India

Punjab

Time: 00:01:33

Points

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sum of 2 missing numbers of the sequence 6, ?, 20, 15, ?, 1 will be

M4maths Previous Puzzles

10 Sep 2012 sequence