(14 x 4 = 56) sto Nepali students. 23. In the and In a group of 60 students, 30 can speak Nepali only and 15 can speak English only. How many can speak English and 13. In a survey of 900 students in a school, it was found that 600 students liked tea, 500 liked coffee and 125 did not like both (i) Draw a Venn-diagram to illustrate the above information. (ii) Find the number of students who like both drinks. 14. Simplify: (4232)5 - (3242), + (4110)5. 15. Convert this binary number into quinary number: ver can 24. tue (110111)2. - 16. Simplify: -64 = 16 + (12 x6 = (16 - 10 - 2)}]. 17. Resolve into factors: a- 2ab + b2 - c2 - 2cd - d2. 18. Resolve into factors: 2(x+y)2 - 17(x+y) +15. + 20. If x + y = 8 and xy = 15, find the value of x3 + y. 21. If a + b = 5, find the value of a3 + b3 + 15ab. 22. Find the value of x from the given figure: - 1 x3​