M4maths Previous Puzzles

25 Apr 2016 Sequence

What is the next number of the following sequence
67, 78, 89, 910, 1021, ......

OPtion

1) 1122
2) 2121
3) 1011
4) 1132
5) 2132
6) 2122
7) 2124
8) 2113
9) 1133
10)2123

Solution

67
(6+1)(7+1) = 78
(7+1)(8+1) = 89
(8+1)(9+1) = 910
(9+1)(1+1)(0+1) = 1021
Similarly
(1+1)(0+1)(2+1)(1+1) = 2132
Option 5)

Correct Option: 5 Best Solution (15)

Lenin   8 years AGO

add 1 to the each digit of the number.
6+1=7, 7+1=8 the next number 78
7+1=8, 8+1=9 the next number 89
8+1=9, 9+1=10 the next number 910
9+1=10, 1+1=2, 0+1=1, the next number 1021,
1+1=2, 0+1=1, 2+1=3, 1+1=2 the next number 2132.
the answer is option 5.

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sumant kumar   8 years AGO

increase every digit by +1 e.g
67= add +1 in 6 and in 7 that is =78
78= again add +1 in both the digit then it will become =89
89= 910
910=1021 (add +1 in 9, 1 and 0)
1021 = 2132 (add +1 in 1, 0, 2 and 1)

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ramesh umate   8 years AGO

Every digit adding next digit.
910 ---- 1021
Similaraly 1021----- 2132

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MRITUNJAY   8 years AGO

add 1 to each digit and get the answer
6+1=7,8+1=9=79
.
.
.
1+1=2,0+1=1,2+1=3,1+1=2=2132
option 5

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Divesh Singla   8 years AGO

67+11=78
78+11=89
89+11=910 (8+1 9+1)=9 10
910+111=1021 (9+1 1+1 0+1)=10 2 1
1021+1111=2132 (1+1 0+1 2+1 1+1)=2 1 3 2

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rajan bhagat   8 years AGO

1 is being added at each decimals place
therefore answer is 2132

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Mridula Shaw   8 years AGO

67+11=78
78+11=89
89+11=910
910+111=1021
1021+1111=2132

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Maji   8 years AGO

If the numbers are next digits from 1 to 10, then
6|7,
7|8,
8|9,
9|10,
1|0|2|1,then the next number is
2|1|3|2.
Therefore,
2132 is the next number.
option : 5).

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Pooja Priti   8 years AGO

last number given is 1021 so from this no.we select 21 as the first two digit of next number and as the previous difference is 11 so we proceed with adding 1 that is 12.so the number is 2132

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Abhyuday Bhadauriya   8 years AGO

pick d last/last 2 no. followed by the same digits (picked) incremented by 1

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Mrs.Thangaraj   8 years AGO

2 digit numbers added by 11. 3 digit number added by 111. so the 4 digit number should add by 1111. 1021+1111=2132

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Kunal nemu   8 years AGO

67,78,89,910,1021......
1st number 67 where last digit 7.
2nd number 78 where last digit 8
3rd number 89 where last digit 9
4th number 910 where last digit 10
next number 1021 where last digit 21...and difference between 21 and 10 is 11
so the last number is 2132

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Mukund Manohar   8 years AGO

Add 1 to every digit of the number to get the next number
67=(6+1)(7+1)=78
78=(7+1)(8+1)=89
89=(8+1)(9+1)=910
910=(9+1)(1+1)(0+1)=1021
1021=(1+1)(0+1)(2+1)(1+1)=2132

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Lalitha K M   8 years AGO

the last number of each numbers will follow in next number and second number of each number will be increased in next last number

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Shivangi Gupta   8 years AGO

here we are dividing the length of the number by 2 and taking the floor .
The first part of the next number will be the second part of the current number and the second part of the next number will be generated by adding one to every digit of the first part of the next number .
67 : 6 6+1
78 : 7 7+1
89 : 8 8+1
910 : 9 9+1
1021 : 10 1+1 0+1
2132 : 21 2+1 1+1

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