Question 143Asked in BPSC TRE 2.0 (2023) Language & General Studies Class 1-5

If 9 * 7 = 32, 13 * 7 = 120 and 17 * 9 = 208, then what is the value of 19 * 11?यदि 9 * 7 = 32, 13 * 7 = 120 तथा 17 * 9 = 208, तो 19 * 11 का मान क्या है?

यदि 9 * 7 = 32, 13 * 7 = 120 तथा 17 * 9 = 208, तो 19 * 11 का मान क्या है?

A180180
B220220
C240240
DMore than one of the aboveउपर्युक्त में से एक से अधिक
ENone of the aboveउपर्युक्त में से कोई नहीं

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Correct answer: (C) 240240

Explanation

The rule is a * b = a² - b²: 9² - 7² = 32 and 17² - 9² = 208. So 19 * 11 = 361 - 121 = 240.नियम a * b = a² - b² है: 9² - 7² = 32 और 17² - 9² = 208। अतः 19 * 11 = 361 - 121 = 240।

If 9 * 7 = 32, 13 * 7 = 120 and 17 * 9 = 208, then what is the value of 19 * 11?यदि 9 * 7 = 32, 13 * 7 = 120 तथा 17 * 9 = 208, तो 19 * 11 का मान क्या है?

From BPSC TRE 2.0 (2023) Language & General Studies Class 1-5 — Previous Year Paper