For the following questions answer them individually
If the angles of a triangle are in the ratio of 1:4:7, then find the ratio of the greatest angle to the smallest angle.
The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The $$11^{th}$$ observation is
Arun and Amit can do a piece of work in 9 days and 12 days respectively. If they work for alternate days and Amit starts the work first, then in how many days 35/36 parts of whole work will be completed?
Aparna changes the marked price of an item to 50% above its C.P. What % of discount allowed in approximately to gain 10%?
A wholesaler purchased 7 hair clips for a rupee. How many for a rupee must he sell to get profit of 40%
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