Jamb Mathematics Past Questions For Year 1990
Question 21
Find the sum of the first 18 terms of the progression 3, 6, 12......
- A. 3(2\(^{17}\) - 1)
- B. 3(2\(^{18}\) - 1)
- C. 3(2\(^{18}\)+ 1)
- D. 3(2\(^{17}\) - 1)
Question 22
At what value of x is the function x\(^2\) + x + 1 minimum?
- A. -1
- B. \(-\frac{1}{2}\)
- C. \(\frac{1}{2}\)
- D. 1
Question 23
The angle of a sector of s circle, radius 10.5cm, is 48°, Calculate the perimeter of the sector
- A. 8.8cm
- B. 25.4cm
- C. 25.6cm
- D. 29.8cm
Question 24
If Cos \(\theta\) = \(\frac{12}{13}\). Find \(\theta\) + \(cos^2\theta\)
- A. \(\frac{169}{25}\)
- B. \(\frac{25}{169}\)
- C. \(\frac{169}{144}\)
- D. \(\frac{144}{169}\)
Question 25
A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pope is 10cm.Find the volume of metal used in making 3m of the pipe.
- A. 153\(\pi\)cm3
- B. 207\(\pi\)cm3
- C. 15 300\(\pi\)cm3
- D. 20 700\(\pi\)cm3
