What will come in the place of question mark (?) in the following question?
[(2 + 3 – 37) / (31 – 23)] + {23 – 9} × [(5 + 2 + 32) / (31 – 6 × 3)] = ?[(2 + 3 – 37) / (31 – 23)] + {23 – 9} × [(5 + 2 + 32) / (31 – 6 × 3)] = ?
⇒ ? = (-32/8) + (14) × (39/13)
⇒ ? = -4 + 14 × 3
⇒ ? = -4 + 42
∴ ? = 382. If (sin A + cos A)/(sin A – cos A) = 5/4, the value of (tan2A + 1)/(tan2A - 1) = ?
3. When was the first All India Postage Stamp issued?
4. What is the scientific name of Bitter Melon?
6. If \(sec\theta = \frac{{13}}{{12}}\) then value of \(\frac{{1 - tan\theta }}{{1 + tan\theta }}\) is