Question

We could easily solve this problem. Can we solve the problem of sheep and shepherds
like this? How ?
How do we understand this problem?
As we know, total number of heads = 16, share minimum 2 legs (common to both sheep
and shephered) to these 16 heads. Now total 16 x 2 = 32 legs are shared.
Total legs - 32 = 56 - 32 = 24 legs.
Do
you know, whose legs these remaining 24 legs are ?
Yes. These 24 legs are for the sheep. Already we shared 2 legs to each. So we have to
share 2 more legs to each sheep. In this way we can share this 24 legs to 12 sheep.
Total 16 heads. 12 sheep have 12 heads. So the remaining 4 heads (16 -12 ) are the
heads of shepherds.
No of sheep = 12
No of shepherds = 4​

Answer 1

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Subject Test

You are attempting question 70

The intrinsic carrier density of a rectangular specimen of Ge is 2.5x105 /m². The length,

width, and height of the specimen are 20 mm, 3 mm, and I mm respectively. Determine

the total current and intrinsic conductivity if a potential difference of 8 V is applied across

the length of the specimen. Given electron and hole mobility as 0.39 m / Vs and

0.19 mº/Vs respectively.