Question : Which of the following numbers will completely divide 412 + 413 + 414 + 415?
Option 1: 3
Option 2: 7
Option 3: 11
Option 4: 17
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Correct Answer: 17
Solution : Given: 4 12 + 4 13 + 4 14 + 4 15 = 4 12 (1 + 4 + 4 2 + 4 3 ) = 4 12 (1 + 4 + 16 + 64) = 4 12 (85) Since 85 has factors of 5 and 17. $\therefore$ It is divisible by 17. Hence, the correct answer is 17.
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Question : Directions: Which of the following interchanges of numbers would make the given equation correct? 7 × 4 ÷ 14 + 12 + 30 = 50
Question : Directions: By Interchanging the given two numbers which of the following equations will be correct? 7 and 4
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? + and –, 7 and 6
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? × and ÷, 7 and 9
Question : Directions: By interchanging the given two signs which of the following equations will be not correct? + and ÷
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