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Question: 22
If the arithmetic mean and geometric mean of the positive numbers a and b are 10 and 8 respectively, then =
రెండు ధన సంఖ్యలు a, b ల అంకమధ్యమం, గుణ మధ్యమం లు వరుసగా 10 మరియు 8 అయితే, =
1/9
1/12
5/36
1/144
Answer: 3
5/36
Question: 23
If a +1,3a-4 and 6a – 13 are in arithmetic progression, then 4a + 6 =
a + 1, 3a – 4, 6a – 13 లు అంకశ్రేఢిలో ఉంటే 4a + 6 =
16
10
22
30
Answer: 3
22
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