. ? . . . . : . . - -- . - . - . - . -: . -. ? . . . . : . . -- . - . - . - . - : . -. ? . . . . : . : , . ? . . . . : . . ? . . . . : . . ? . . . . : . . ? . . . . - : . . - ? . . . . : . . ? . . . . : . . - ? . . . . : . . ? . . . . : . . - ? . . . . : . . ? . . . . : . : - . - ? . . . . : . . - ? . . . . : . . ? . . . . : . . - ? . . . . : . . ? . . . . : . . Who is known as the 'Lady of the Lamp'?. Sorojini Naidu. Hellen Killer. Florence Nightingale. Madame Teresa : . Florence Nightingale: wikipedia.org: Lady with the lamp ; ( ) Ladyof the lamp.For which of the followingdisciplines Nobel Prize is awarded ?.Physices and Chemistry. Physiology or Medicine. Literature, peace andEconomices . All of the above : . All of the above: edpdbd.org . Lunareclipse occurs on -. A new moon day. A full moon day. A half moon day. A moonless day : . A full moon day: wikipedia.org. World'No-Tobacco Day' is observed on - . May 25. May 28. May 30. May 31 : . May 31: edpdbd.org . Whichof the following ecosystems covers the largest area of the earth'ssurface ? . DesertEcosystem. Mountain Ecosystem. Fresh water Ecosystem. Marine Ecosystem : . Marine Ecosystem: wikipedia.org.In Cricket game the length of thepitch between th two wickets is - . 24 yards. 23 yards. 22 yards. 21 yards : . 22 yards: wikipedia.org. IMF(International Monitary Fund) is the result of -. Hawana Conference. Geneva Conference. Rome Conference. Brettonwood Conference : . Brettonwood Conference: officialwebsite of IMF.Dengue fever is spread by -. Aedes aegypti mosquito. Common House flies. Anophilies mosquito. Rats and squirrels : . Aedes aegypti mosquito: official website of WHO. Theinternational Court of Justice is located in . New York. London. Geneva. Hague : . Hague: edpdbd.org . isequal to -. 11. 13. 15. 17 : . 13. Badmintoni s the national sport of -. Malaysia. Scotland. China. Nepal : . Malaysia: wiki answers,badmintoncentral.com. EUROis the currency of -. Asia. Europe. America. Africa : . Europe: edpdbd.org . Photosynthesistakes place in -. Roots of the plant. Stems of the plants. Green parts of the plants. All parts of the plants : . Green parts of the plants: wikipedia.org. Theterm PC means -. Private computer. Prime computer. Personal computer. Professional computer : . Personal computer: wikipedia.org. Fillin the blank of the following sentence with the right form of verb. if I_____ a king!. am. was. were. shall be : . were. Tiger: Zoology :: Mars : -. Astrology. Cryptology. Astronomy. Telescopy : . Astronomy. Maidenspeech means -. Frist speech. Middle speech. Maid servent's speech. Final speech : . Frist speech: edpdbd.org Idioms and Phrases. N.Bstands for -. Note before. Nobar. Non bearing. Nota bene : . Nota bene: oxford online dictionary. Whatis the masculine gender of "mare" ?. Mermaid. Bear. Stallion. Dog : . Stallion. Botanyis to plants as Zoology is to -. Flowers. Rivers. Mountains. Animals : . Animals . ? . . . . : . : edpdbd.org : . ? . . . . : . : Bangabandhu Online Museum. ? . . . . : . : . ? . . . . : . : edpdbd.org ( ). ? . . . . : . : edpdbd.org : Elections in Asia: A data handbook, Volume I. ? . . . . : . : edpdbd.org : . ? . . . . : . : official website of ministry of finance, Government ofPoeple's Republic of Bangladesh. ? . . . . : . : edpdbd.org -. ? . . . . : . : official website of SEC. ? . . . . : . : . ? . UNDP . UNESCO . UNICEF . UNCTAD: . UNESCO: official website of UN. - ? . . . . : . : wikipedia.org. D- ? . . . . : . : official website of D8. - ? . . . . : . : edpdbd.org . - ? . . . . : . : wikipedia.org. ? . . . . : . : edpdbd.org . ? . . . . : .- ? . . . . : . : wikipedia.org. ? . . . . : . : edpdbd.org . ? . . . . : . : edpdbd.org . ?. . . . : . . ?. . . . : . . ?. . . . : . . ?. . . . : . . ?. . . . : . . -. . . . : . . -. . . . : . . -. . . . : . . ? . . . . : . . -. . . . : . . -. . . . : . . -. . . . : . . ?. . . . : . . ?. . . . : . . ?. . . . : . . ?. . . . : . . ?. . . . : . . -. . . . : . . -. . . . : . . ?. . . . : . . . . , ?. . . . : . :, = xx =x . = ,

. ?. . . . : . :, = x = y = xy = x = (i), = x + = y ,(x + )(y ) =

y = y =

= ( + ) = a a = a = = a2 = . ?. 4. 8. 5. 7: . 8:

. ABC- ,AD ABD- x ABC- ?.x2. 2x. . : . 2x : x 2x . A= {1, 2, 3} B = A B = ?. {1,2, 3}. {1,2, }. {2,3, }. : . {1, 2, 3}. x+ y = 2, x2 + y2 = 4 x3 + y3 = ?. 8. 9. 16. 25: . 8:x2 + y2 = (x +y)2 2xy xy = {(x + y)2 (x2 + y2)} 2 = 0 2 = 0x3 + y3 = (x +y)3 3xy(x + y) = 23 = 8. ; ?.. . . : . :, x, x + 1, x + 2,x(x + 1)(x + 2) = 5(x + x + 1 + x +2) x(x + 1)(x + 2) = 5(3x + 3) x(x + 1)(x + 2) = 53(x + 1) x(x + 2) = 15 x2 + 2x 15 = 0 x2 + 5x 3x 15 = 0 (x + 5)(x 3) = 0 x = 3, 5x = 3 = (x + x + 1 + x + 2) 3 = 4. - ?. . . . : . := 2r = 132= r2 = 1386. - 25 75 - ?.70. 85. 75. 100: . 75:, - x x + 25 = x(x + 25) ,x(x + 25) = 7500 x2 + 25x 7500 = 0 x2 + 100x 75x 7500 = 0 (x + 100)(x 75) = 0 x = 75, 100 - x = 75. 240 , 1 ?.13 . 14. 15. 16: . 15:, x = 240 x = 240 (x + 1),

x(x + 1) = 240 x2 + x 240 = 0 x2 + 16x 15x 240 = 0 (x + 16)(x 15) = 0 x = 15, 16 x = 15. . . . . : . : = 180( 2) = 180(5 2) = 540 = 6 . .. . . : . : - - = 360 12 = 30 = 4 = 4 30 = 120. ?.. . . : . .., ., ., -- ?... .. .. .: . .: 4 = 4 0.48 = 1.92. , ?.. . . : . :, x ,

3x + 2x = 60 5x = 60 x = 12 . . . . - . : . - . ?.. . . : . . - - , , - - - ?. . . . : . . : : : ?. . . . : . .

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