Simplify : (i) 2 \(\frac{2}{3}\) . 2 \(\frac{1}{5}\) (ii) (\(\frac{1}{33}\))7 (iii) 11 \(\frac{1}{2}\) / 11\(\frac{1}{4}\) (iv) 7 \(\frac{1}{2}\) . 8 \(\frac{1}{2}\)
(i) 2 \(\frac{2}{3}\) . 2 \(\frac{1}{5}\)= 2( \(\frac{2}{3}\) + \(\frac{1}{5}\))
= 2 \(\frac{13}{15}\)
(ii) (\(\frac{1}{33}\))7 = (3-3)7
= (3)-21
(iii) \( \frac{11\frac{1}{2}}{ 11\frac{1}{4}}\)
=11\(\frac{1}{4}\)
(iv) 7 \(\frac{1}{2}\) . 8 \(\frac{1}{2}\)
= (56) \(\frac{1}{2}\)
Length (in hours) | Number of lamps |
|---|---|
300 − 400 | 14 |
400 − 500 | 56 |
500 − 600 | 60 |
600 − 700 | 86 |
700 − 800 | 74 |
800 − 900 | 62 |
900 − 1000 | 48 |
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?
Why was Santosh sent to the local school?