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Subject Mathematics
1151. The next number in the sequence 3, 6, 11, 18, 27, ……. is
1158. Average cost of 5 apples and 4 mangoes is 36. The average cost 7 apples and 8 mangoes is 48 taka. Find the total cost of 24 apples and 24 mangoes.
1161. A predator is chasing its prey. The predator takes 4 leaps for every 6 leaps of the prey and the predator covers as much distance in 2 leaps as 3 leaps of the prey. Will the predator succeed in getting its food?
1164. Three math classes, X, Y, and Z, take an algebra test. The average, score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all students in classes Y and Z together is 81. What is the average for all the three classes?
1171. A company makes a profit of 5% on its first Tk. 1000 of sales each day, and 4% on all sales in excess of Tk. 1000 for the day. What would be the profit of the company in a day when sales are Tk. 6000?
1173. The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month. What is the percentage increase in his original salary?