In the fig 1.29 l (LN) = 5, l (MN) = 7, l (ML) = 6,
l (NP) = 11, l (MR) = 13, l (MQ) = 2 then find l (PL), l (NR), l (LQ).

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Solution

Given: l(LN) = 5, l(MN) = 7, l(ML) = 6, l(NP) = 11, l(MR) = 13 and l(MQ) = 2
We know that l (PL) = l (PN) $-$ l(LN)
i.e., l (PL) = 11 $-$ 5 = 6

Also, we have,
l(NR) = l(MR) $-$ l(MN)
⇒ l(NR) = 13 $-$ 7 = 6

and l(LQ) = l(LM) + l(MQ)
⇒ l(LQ) = 6 + 2 = 8

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7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 + 5

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