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The first three-digit number is (100), which is not divisible by (7), but (105,112,119,\ldots) is the AP of three-digit multiples of (7). What is the (50)th term of this AP?
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Answer and explanation
Correct answer: (448)
In this AP, (a=105), (d=7), so (a_{50}=105+49\times7=448). In an AP of multiples, choose the first correct multiple.
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What is the correct answer to this question?
(448)
Why is this the correct answer?
In this AP, (a=105), (d=7), so (a_{50}=105+49\times7=448). In an AP of multiples, choose the first correct multiple.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Finding the $n$th term of an AP.
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