in $\triangle ABC$ and $\triangle DEF$ , IF $\angle A=50$, $\angle B=70$, $\angle C=60$, $\angle D=60$, $\angle E=70$ and $\angle F=50$, then
1). $\triangle ABC\sim\triangle FED$
2). 3
3). 6
4). 7
1. Find 2 consecutive natural numbers, sum of whose squares is 25.
5. A shepherd had 17 sheep. All but eight died. How many was he left with?
6. Phosphorus is kept in water because
7. If $(2^{3})^{2}=4^{x}$ then $3^{x}$ is equal to
8. A missile travels at 1260 km/h. How many metres does it travel in one second?
10. Select the related word/letters/number from the given alternatives.9 : 738 : : 10 : ?