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Grade-4
Find the Missing Number
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Look at the number pattern shown below and find the missing number :
390, 405, ?, 435, 450
Explanation
Observe the pattern carefully.
Each number in the pattern is increased by 15 to get the next term in the pattern.
390
390 + 15 = 405
405 + 15 = 420
420 + 15 = 435
435 + 15 = 450
The missing number in the pattern is 420.
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