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Grade-1
Count by 10 - Numbers up to 100
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Look at the number pattern shown below and find the missing number :
41, ?, 61, 71, 81
Explanation
Observe the pattern carefully.
Each number in the pattern is increased by 10 to get the next term in the pattern.
41
41 + 10 = 51
51 + 10 = 61
61 + 10 = 71
71 + 10 = 81
The missing number in the pattern is 51.
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