Find the next number in the pattern:
1, 12, 123, 1234, _____

12345

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11234

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12123

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12346

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Solution

The correct option is A 12345
In the pattern above, one more digit is added to the previous term. Also, the new digit is one more than the value of the digit at the units place in the previous term.

So, the next term after 1234 will be 12345.

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Similar questions

1 \times 8 + 1 = 9

12 \times 8 + 2 = 98

123 \times 8 + 3 = 987

1234 \times 8 + 4 = 9876

12345 \times 8 + 5 = 98765

1 * 8 + 1 = 9

12 * 8 + 2 = 98

123 * 8 + 3 = 987

1234 * 8 + 4 = 9876

12345 * 8 + 5 = 98765

12345 = 11111 + 1111 + 111 + 11 + 1

\begin{matrix} 1 \times 8 + 1 = 9; & 12 \times 8 + 2 = 98; & 123 \times 8 + 3 = 987; 1234 \times 8 + 4 = 9876; & 12345 \times 8 + 5 = 98765 \end{matrix}

1 \times 9 + 2 = 11 12 \times 9 + 3 = 111 123 \times 9 + 4 = 1111 1234 \times 9 + 5 = 11111 12345 \times 9 + 6 = . . . . . . 123456 \times 9 + 7 = . . . . . .

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