এর জন্য অনুসন্ধান ফলাফল: ডাব্লুপি+2020 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 বি +++++। 2 বি। 2b++++++++++++++++++% 0 2b++++++++++++++++++++++++++++++++++++++++++++++++++++%