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1. Look at this series: 36, 34, 30, 28, 24, ... What number should come next?
Answer: Option B
Explanation:the first diffrence is of 2
and the second diffrence is of 4
and the sequence continues so 24-2=22
ShortCut By :: AkhilFor the first two numbers there is a difference of 2 and next two nos have difference of 4 and 2 and 4 repeat the procedure
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Tags: Capgemini
2. Look at this series: 80, 10, 70, 15, 60, ... What number should come next?
Answer: Option A
Explanation:here 1,3,5............... terms are decreasing by 10
and 2,4,6,8................ are being increased by 5
so 6th term = 15 5=20;
ShortCut By :: monicastarting from the first number, every alternate number is formed by Reducing 10. And from the second number, every alternate number increases by 5.
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Tags: Capgemini
3. Find the number that can be put in place of the question mark. 3 12 7 26 15 b?
Answer: Option D
Explanation:(Logic: 3*2+1=7 12*2+2=26
7*2+1=15 26*2+2=54)
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Tags: TCS
4. find the number that can be put in place of the question mark
5,6,?,87,412,2185.
Answer: Option D
Explanation:series in the form of 5*1+1^3=6,6*2+2^3=20,20*3+3^3=87,87*4+4^3=412,412*5+5^3=125.
Workspace
Tags: TCS
5. find the number that can be put in place of the question mark.
1.25,3,7.1,1.50,1,8.1,1.75,-1,?
Answer: Option B
Explanation:1.25+0.25=1.50+0.25=1.75
3-2=1-2=-1
7.1+1=8.1+1=answer is 9.1
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Tags: TCS
6. Find the number that can be put in place of the question mark.
3 7 14 23 36 49 ? 83 104
Answer: Option B
Explanation:7-3=4 4*4=16 16-2=14
36-23=13 13*4=52 52-3=49
83-56=27 27*4=108 108-4=104
Workspace
Tags: TCS
7. Find the missing in the series: 70, 54, 45, 41,__.
Answer: Option A
Explanation:70-54 = 16 = 4^2
54-45 = 9 = 3^2
45-41 = 4 = 2^2
41-40 = 1 = 1^2.
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Tags: TCS
8. Find the missing term of the series:-
2,5,10,17,?,41
Answer: Option C
Explanation:2+3=5, 5+5=10, 10+7=17,
So, the next prime number is 11
so,17+11=28.
and, 28+13=41
Workspace
Tags: Infosys
9. Find the next term of the series:-
7,14,55,110,?
Answer: Option A
Explanation:7 + 7 = 14, and reverse of 14 is 41
Now, 41+14=55
Similarly,
Reverse of 55 is 55.
Thus, 55 +55=110.
Now, reverse of 110 is 011
so the next term is 110+011=121.
Workspace
Tags: Infosys
10. Find the wrong number in the given series.
3, 4, 10, 32, 136, 685, 4116
Answer: Option B
Explanation:The sequence is as follows :
2nd term = (1st term 1) * 1
3rd term = (2nd term 1) * 2
4th term = (3rd term 1) * 3 and so on.
So, 32 is wrong and must be replaced by (10 1) * 3 i.e. 33.
Workspace
Tags: IBM